Humidity, Meaning, Types, Effects, Factors Affecting Humidity

Humidity

Humidity is a fundamental concept in climatology and physical geography that describes the amount of water vapour present in the air at any given time. It plays a crucial role in weather patterns, climate behaviour, environmental conditions, and even human comfort. Understanding humidity is essential for UPSC Geography and GS Paper‑I (Environment and Ecology).

Humidity

Humidity refers to the amount of water vapour present in the atmosphere at a particular place and time. It is a key factor that influences weather patterns, climate, and human comfort, as well as the growth of plants and crops. High humidity makes the air feel warmer and sticky because it reduces the evaporation of sweat from the body, while low humidity makes the air dry, which can cause skin and respiratory issues.

Read about: Climatic Regions

Types of Humidity

Humidity can be measured in different ways depending on how we want to express the amount of water vapour in the air. The main types are Absolute Humidity, Specific Humidity, and Relative Humidity, each used for scientific, weather, or comfort purposes.

1. Absolute Humidity

  • Absolute Humidity represents the actual amount of water vapour present in a unit volume of air.
  • Measured in grams per cubic meter (g/m³).
  • Independent of temperature; it gives the exact moisture content regardless of air heating or cooling.
  • It is useful for scientific research, laboratory experiments, and precise atmospheric calculations.
  • It does not provide information about how close the air is to saturation.
  • It is important for understanding moisture content in closed systems like greenhouses or controlled climate chambers.
  • It helps in calculating dew point and condensation in meteorology.

2. Specific Humidity

  • Specific Humidity is defined as the mass of water vapour per unit mass of air, including dry air and water vapour.
  • It is expressed in grams per kilogram (g/kg).
  • Remains constant even if air expands or contracts with changes in temperature and pressure.
  • Useful in atmospheric studies, weather forecasting, and studying air parcel dynamics.
  • Helps in predicting cloud formation, rainfall, and condensation levels in a region.
  • Used in climate science to compare moisture content between different air masses.

3. Relative Humidity

  • The ratio of actual water vapour present to the maximum water vapour the air can hold at a given temperature, expressed in percentage (%).
  • Varies with temperature: warmer air holds more moisture, colder air holds less.
  • 100% relative humidity means the air is saturated, and condensation occurs (fog, dew, clouds, or rain).
  • Used in weather forecasting, human comfort studies, and agricultural planning.
  • High relative humidity can make humans feel hot and sticky, as sweat evaporation slows down.
  • Low relative humidity can lead to dry skin, respiratory discomfort, and increased evaporation from soil and plants.

Effect of Humidity

  • Humidity affects weather and climate, contributing to cloud formation, dew, fog, rainfall, and storm or cyclone development.
  • High humidity slows sweat evaporation, making humans feel hot, sticky, and uncomfortable.
  • Low humidity can cause dry skin, respiratory discomfort, and dehydration.
  • It influences agriculture, affecting soil moisture, crop growth, and yield, and extreme humidity can stress plants.
  • Humidity impacts ecosystems and wildlife, affecting habitat conditions and biodiversity.
  • High humidity can cause condensation, corrosion, and damage to electronic devices, while low humidity increases static electricity, affecting machinery.
  • It regulates the water cycle and rainfall distribution and affects energy usage for cooling or humidifying spaces, making it important for human comfort and planning.

Factors Affecting Humidity

Humidity refers to the amount of water vapour in the air, and its level is influenced by various natural and environmental factors. Understanding these factors helps in weather prediction, climate study, and agricultural planning.

Temperature

  • Warmer air can hold more water vapour, so humidity increases with higher temperatures.
  • Cooler air holds less moisture, which can lead to higher relative humidity in cold conditions.

Evaporation

  • Water evaporating from oceans, rivers, lakes, and soil adds moisture to the air, increasing humidity.
  • Evaporation is faster in hotter and windier conditions, raising the local humidity level.

Transpiration

  • Plants release water vapour into the atmosphere through transpiration, contributing to air moisture.
  • Forested and vegetated areas often have higher humidity due to abundant transpiration.

Condensation

  • When warm, moist air cools down, its ability to hold water decreases, leading to condensation.
  • This forms clouds, fog, dew, or precipitation, influencing local humidity levels.

Air Pressure

  • High atmospheric pressure compresses air and can reduce humidity, while low pressure allows air to expand and hold more moisture.
  • Pressure systems influence weather patterns and the distribution of humidity across regions.

Proximity to Water Bodies

  • Areas near oceans, seas, and large lakes generally have higher humidity due to constant moisture supply.
  • Inland or desert regions often experience lower humidity due to lack of nearby water sources.

Wind and Air Movement

  • Winds can bring moist or dry air from other regions, altering local humidity.
  • Coastal breezes and monsoon winds play a major role in increasing regional humidity.

Vegetation and Land Use

  • Dense vegetation increases humidity through transpiration and reduces evaporation from soil.
  • Urbanization and deforestation can lower humidity, affecting microclimates.

Read about: Climate of India

Relative Humidity vs Absolute Humidity

Relative Humidity and Absolute Humidity are two ways of measuring moisture in the air. Absolute humidity shows the actual amount of water vapour, while relative humidity shows how full the air is with moisture compared to its capacity at a given temperature.

Relative Humidity vs Absolute Humidity
Feature Absolute Humidity Relative Humidity

Definition

Actual amount of water vapour present in a unit volume of air

Ratio of actual water vapour to the maximum water vapour air can hold at a specific temperature

Unit

grams per cubic meter (g/m³)

Percentage (%)

Temperature Dependence

Independent of temperature

Varies with temperature

Indicates

Actual moisture content

How close the air is to saturation

Usage

Scientific calculations, laboratory studies

Weather reports, human comfort, forecasting rainfall

Effect on Humans

Shows only moisture content, no direct comfort effect

High RH feels hot and sticky; low RH feels dry and uncomfortable

Saturation Point

Not applicable

100% RH indicates air is saturated and condensation may occur

Advantages

Accurate for measuring total moisture in air

Useful for predicting weather and human comfort

Humidity FAQs

Q1: What is humidity?

Ans: Humidity is the amount of water vapour present in the air at a particular place and time.

Q2: What are the main types of humidity?

Ans: The main types are Absolute Humidity, Specific Humidity, and Relative Humidity.

Q3: How is humidity measured?

Ans: Humidity is measured using devices like a hygrometer or a wet and dry bulb thermometer.

Q4: What is the difference between absolute and relative humidity?

Ans: Absolute humidity measures actual water vapour content, while relative humidity shows how close the air is to being saturated, expressed in percentage.

Q5: Why is relative humidity important?

Ans: It helps predict cloud formation, rainfall, and weather conditions, and affects human comfort and agriculture.

Elephant Corridor in India, State Wise List, Features, Legal Aspects

Elephant Corridor in India

Elephants are keystone species that shape forest ecosystems by dispersing seeds, creating clearings, and maintaining ecological balance. India hosts nearly 60% of the global wild Asian elephant population, giving it a critical responsibility for elephant conservation. Rapid habitat fragmentation, infrastructure expansion, and human settlements have disrupted traditional elephant migration routes, increasing human-elephant conflict. Elephant corridors in India play a vital role in enabling safe seasonal movement between forest habitats, supporting genetic diversity, reducing conflict, and ensuring long term survival of elephants across landscapes.

Elephant Corridor in India

An Elephant Corridor in India refers to a defined strip of land that allows elephants to move between two or more suitable forest habitats. According to the Elephant Corridors of India Report 2023, India has 150 ground validated elephant corridors across 15 elephant range states, a 40% increase from 88 corridors identified in 2010. These corridors connect 33 Elephant Reserves spread across 10 major elephant landscapes, enabling seasonal migration, genetic exchange, and access to food and water. West Bengal alone accounts for 26 corridors, the highest in the country.

Elephant Corridor in India Features

Elephant corridors in India function as ecological lifelines, balancing elephant survival needs with human development pressures across multiple landscapes.

  • Ecological Connectivity: Corridors maintain landscape level connectivity, preventing habitat isolation and supporting long distance movement between feeding, breeding, and water areas.
  • Genetic Diversity Preservation: Continuous movement allows inter breeding between elephant groups, preventing genetic bottlenecks and maintaining healthy populations.
  • Human-Elephant Conflict Reduction: Well protected corridors reduce crop raids and accidental encounters by guiding elephants away from villages and farmlands.
  • Keystone Species Protection: Elephants shape forests by seed dispersal and vegetation modification, making corridor conservation critical for entire ecosystems.
  • Habitat Restoration Needs: Around 10 corridors require immediate restoration due to infrastructure barriers, mining, agriculture, or linear development projects.
  • Usage Pattern Changes: Approximately 29 corridors show declining usage due to fragmentation, while 59 corridors report stable or increased elephant movement.
  • Cultural and Heritage Value: Elephants are India’s National Heritage Animal, deeply embedded in traditions, reinforcing strong public and institutional conservation support.
  • Landscape Ecology Application: Modern corridor identification integrates satellite imagery, long term field data, GIS analysis, and adaptive algorithms.
  • Disaster Risk Linkages: Hydropeaking risks from projects like Lower Subansiri hydropower threaten corridor safety, especially for calves during sudden water releases.
  • Forest Regeneration Role: Corridors aid forest regeneration by enabling seed dispersal across degraded patches, benefiting multiple wildlife species including tigers.

Elephant Corridor in India Legal Aspects

Elephant corridor protection in India is supported by constitutional duties, wildlife laws, judicial rulings, and national conservation initiatives.

  • Wildlife Protection Act, 1972: Corridors can be legally notified as Conservation Reserves under Section 36A or Community Reserves under Section 36C.
  • Project Elephant Framework: Launched in 1992, Project Elephant provides financial and technical assistance for corridor protection, habitat management, and conflict mitigation.
  • MoEFCC Coordination: The Ministry of Environment, Forest and Climate Change coordinates corridor identification and validation with state forest departments.
  • Supreme Court Recognition: The Supreme Court upheld the “right of passage” for elephants, affirming state responsibility to protect migratory routes.
  • Madras High Court Ruling: The court validated Tamil Nadu’s notification of the Sigur Plateau corridor, citing Article 51A(g) of the Constitution.
  • Article 51A(g): This constitutional duty mandates citizens and governments to protect forests, wildlife, and show compassion for living creatures.
  • National Elephant Corridor Project: This initiative aims to secure and manage corridors to ensure long term elephant survival within India’s political boundaries.
  • MIKE Programme: Monitoring of Illegal Killing of Elephants operates in 10 Indian elephant reserves, tracking poaching trends under CITES since 2003.
  • Technology Driven Measures: LiDAR based habitat mapping, real time conflict portals like “Surakshya,” and Project RE-HAB bee-fencing enhance corridor safety.
  • State Specific Actions: Kerala declared human-animal conflict a state specific disaster, while Assam and Arunachal Pradesh were directed to notify the Dulung-Subansiri corridor.

Elephant Corridor in India List

India has 150 ground validated elephant corridors across 15 elephant range states, as identified by the Ministry of Environment, Forest and Climate Change in coordination with State Forest Departments. East-Central India hosts 52 corridors (35%), the North-East has 48 corridors (32%), Southern India has 32 corridors (21 %), and Northern India has 18 corridors (12%).

State Wise List of Elephant Corridors in India
State Names of Elephant Corridors

Andhra Pradesh

Tri-Junction Corridor; Rayala ER

Arunachal Pradesh

Pakke-Doimara at Dedzelling; Dulung-Subansiri; Dering-Mebo (Sigar Nalla); Pakke-Papum Longka Nalla; Pakke-Papum Seijosa Nalla; Pakke-Doimara at Tippi; Durpong-Doimukh at Khundakhuwa; D’ering-Mebo at Kongkul

Assam

Deosur; Bogapani (Upper Dihing East-West); Panbari; Kotha Buridehing; Kanchanjuri; Hatidandi; Haldhibari; Golai-Pawai (Upper Dihing East-West); Kukurakata-Bagser at Amguri; Charduar-Singri Hill

Assam & Arunachal Pradesh

D’ering-Dibru Saikhowa; Kalapahar-Doigrung

Bihar

Jamui-Jhajha-Chakayi

Chhattisgarh

Charmar-Jingol; Nagdhara-Baraud; Hati-Kudmura; Chaal-Kartala; Korondha-Rupunga; Balco-Etma Nagar; Balco-Katghora; Khod-Rihand; Ghat Pendari-Pakni

Jharkhand

Bhagabilla-Ratnasai; Jampani-Bhagabilla; Sangajata-Haldipokhar; Lepang-Dumuria; Ankua-Ambia; Raibera-Pulbaburu; Dalapani-Suklara; Dalma-Chandil; Dumariya-Nayagram; Silli-Angara; Bharno-Bero-Kara / Sisai-Karra; Dalma-Asanbani; Dalma-Rugai; Siyaljora-Dhobadhobin; Dumriya-Kundaluka-Murakanjia

Jharkhand & West Bengal

Dalapani-Kankrajhor; Chandil-Matha; Gobarghusi-Jhunjhaka-Banduan

Karnataka

Kaniyanpura-Moyar; Edayarahalli-Doddasampige; Edayarahalli-Guthiyalathur; Talamalai-Chamrajnagar (Pununjur); Karadikkal-Madeshwara

Karnataka & Kerala

Begur-Brahmagiri

Karnataka & Tamil Nadu

Talamalai-Chamrajnagar (Muddahalli); Thalli-Bilikal; Bilikal-Jawalagiri

Kerala

Kudrakote-Thirunelly; Kottiyur-Peria; Peria-Pannippad; Nilambur-Appankappu

Kerala & Tamil Nadu

Nilambur Kovilakam-New Amarambalam; Mudumalai-Nilambur via O’ Valley

Meghalaya

Rewak-Emangre; Nokrek-Emangre; Siju-Rewak; Balpakram-Baghmara; Ranggira-Nokrek; Saipung-Narpuh

Nagaland

Geleki-Sitap; Abhaypur-Singphan; Hollongapar-Longtho; Daldali-Dimapur; Geleki-Tuli; Desoi-Changdang; Tirutilip-Longchem

Odisha

Telkoi-Pallahada; Karo-Karampada; Similipal-Hadagarh-Kuldiha; Maulabhanja-Jiridamali-Anantapur; Kanheijena-Anantapur; Nuagaon-Baruni; Buguda-Central RF; Tal-Kholgarh; Barapahad-Tarva-Kantamal; Kotagarh-Chandrapur; Karlapat-Urlandi

Odisha & West Bengal

Deuli-Suliapada

Odisha & Jharkhand

Badampahar-Dhobadhobin; Badampahar-Karida East

Tamil Nadu

Srivilliputur-Saptur; Kallhatti-Sigur (Glencorin); Avarahalla at Sigur; Kalmalai-Singara-Avarahalla; Moyar-Avarahalla; Siluvaimedu-Kadamparai; Anamalai-Waterfalls Estate; Sholayar Dam (Vazhachal-Anaimalai); Topslip-Navamalai; TANTEA (Ryan route); Talamalai-Guttiyalattur; Mukurthi-Mudumalai; Anaikatti North-South; Anamalai-Punachi; Kallar-Gandhapallayam

Uttar Pradesh

Basanta; Laljhadi; Chhedia; Dudhwa-Katarniaghat; Khata; Laggabagga-Tatarganj-Shukhlaphanta; Shiwalik; Rawasan-Sonanadi (Rajaji-Corbett)

Uttarakhand

Kansrau-Barkote; Motichur-Barkote (Teenpani); Motichur-Gohri; Chilla-Motichur; Rawasan-Sonanadi (Upper Arm); Malani-Kota (Kosi); Chilkiya-Kota (Kosi); Fatehpur-Gadgadia; Kilpura-Khatima; Gorai Tanda (Gola)

West Bengal

Titi-Dumchi-Reti; Titi-Reti; Kalikunda-Chandra (Manikpara); Nayagram-Jamboni (Keshorrekha); Chandabila-Tapoban-Dhumsi; Kalaikunda-Chandra (Satpadi Ghat); Gidhni-Jamboni; Chandua-Joka; Kankrajhore-Lalgarh; Apalchand-Mahananda; Apalchand-Gorumara; Apalchand-Kalimpong (Meenglass); Apalchand-Kalimpong (Sylee); Nimati-Chilpata; Buxa-Titi (Beech-Bharnobari); Buxa-Titi (Torsha); Buxa-Ripu (Sankosh); Mahananda-Kolabari-Tukriajhar; Mahilong-Kalimati; Jhalda-Baghmundi; Chapramari-Kalimpong; Moraghat-Central Daina; Reti-Central Daina; Moraghat-Reti

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Elephant Corridor in India FAQs

Q1: What is an Elephant Corridor in India?

Ans: An Elephant Corridor in India is a land strip that enables elephants to safely move between forest habitats for food, water, and breeding.

Q2: How many Elephant Corridors are there in India?

Ans: As per the Elephant Corridors of India Report 2023, India has 150 identified and ground-validated elephant corridors.

Q3: Which state has the highest number of Elephant Corridor in India?

Ans: West Bengal has the highest number with 26 elephant corridors, accounting for about 17% of India’s total.

Q4: Why are Elephant Corridors in India important?

Ans: Elephant corridors maintain genetic diversity, reduce human-elephant conflict, and support long-distance seasonal migration.

Q5: Which law protects the Elephant Corridor in India?

Ans: Elephant corridors are protected under the Wildlife (Protection) Act 1972, along with Project Elephant and constitutional provisions.

Important Tunnels in India, List, Location, Length, Importance

Important Tunnels in India

India’s challenging terrains, especially in the Himalayas and the Western Ghats, have necessitated the construction of tunnels for road, rail, and metro connectivity. These tunnels not only reduce travel time but also enhance strategic and economic connectivity. Here’s a detailed guide to the most Important Tunnels in India.

Important Tunnels in India

India has developed an extensive network of tunnels across its challenging terrains to ensure all-weather connectivity, reduced travel time, and strategic mobility. These tunnels exemplify India’s engineering excellence, strategic foresight, and commitment to boosting regional development and national connectivity. The Important Tunnels of India have been discussed below in detail.

1. Atal Tunnel (Rohtang Tunnel), Himachal Pradesh

  • Location: Rohtang Pass, Lahaul-Spiti Valley, Himachal Pradesh.
  • Length: 9.02 km – the world’s longest high-altitude tunnel above 3,000 meters.
  • Purpose: Provides year-round connectivity between Manali and Lahaul-Spiti, bypassing snow-blocked routes and reducing travel distance by 46 km.
  • Importance: Enhances strategic military mobility by allowing rapid troop and equipment movement in a sensitive Himalayan region. It also supports tourism and local trade, improving the regional economy.
  • Significance: An engineering marvel due to construction at extreme altitude, in avalanche-prone terrain, with advanced ventilation, lighting, fire safety, and surveillance systems. It was named after former Prime Minister Atal Bihari Vajpayee, reflecting India’s commitment to Himalayan infrastructure development.

2. Pir Panjal Railway Tunnel, Jammu & Kashmir

  • Location: Pir Panjal Range, between Banihal and Qazigund, Jammu & Kashmir.
  • Length: 11.215 km – one of India’s longest railway tunnels.
  • Purpose: Provides all-weather rail connectivity to the Kashmir Valley, reducing travel time in snow-bound Himalayan regions.
  • Importance: Plays a critical role in strategic defense logistics, enabling rapid troop and equipment movement, while also facilitating smooth passenger and freight transport.
  • Significance: An engineering marvel of Himalayan rail infrastructure, constructed using modern tunneling techniques. It is part of the Jammu–Baramulla rail link, ensuring safe and reliable train operations throughout the year, even during extreme winter conditions.

3. Jawahar Tunnel, Jammu & Kashmir

Location: Banihal Pass, Jammu & Kashmir, on NH-44.

  • Length: 2.85 km – one of the earliest highway tunnels in India.
  • Purpose: Provides year-round road connectivity between Jammu and Srinagar, bypassing heavy snowfall zones in the Himalayas.
  • Importance: Ensures continuous transport for civilians, trade, and strategic movement in winter months when snow blocks mountain passes.
  • Significance: Constructed in 1956, it is a historic tunnel in India’s Himalayan infrastructure, modernized with improved lighting, ventilation, and safety systems, demonstrating early engineering ingenuity in high-altitude tunneling.

4. Dr. Syama Prasad Mookerjee Tunnel (Chenani-Nashri), J&K

  • Location: Between Chenani and Nashri, Jammu & Kashmir, on NH-44.
  • Length: 9.28 km – currently India’s longest road tunnel.
  • Purpose: Reduces the distance between Chenani and Nashri by 30 km, saving nearly 2 hours of travel time and bypassing landslide-prone mountainous stretches.
  • Importance: Enhances all-weather connectivity, supports regional trade, tourism, and ensures strategic troop and supply movement in sensitive Himalayan areas.
  • Significance: Inaugurated in 2017, the tunnel features modern tunnel control systems, advanced ventilation, fire safety, and emergency management. It is considered a benchmark for road tunnel safety and engineering in India.

5. Z-Morh Tunnel, Jammu & Kashmir

  • Location: Near Sonamarg, Jammu & Kashmir, on the Srinagar-Leh highway.
  • Length: 6.5 km – a significant all-weather road tunnel in the Himalayas.
  • Purpose: Provides year-round connectivity between Srinagar and Kargil by bypassing avalanche-prone stretches that are often blocked in winter.
  • Importance: Ensures uninterrupted civilian travel, trade, and tourism while also supporting strategic military logistics in this sensitive Himalayan region.

6. Zoji La Tunnel, Ladakh

  • Location: Between Sonamarg (Jammu & Kashmir) and Drass (Ladakh) on the Srinagar-Leh highway.
  • Length: 14.2 km – set to be Asia’s longest bi-directional road tunnel.
  • Purpose: Provides year-round, weather-proof connectivity on a highway that is often blocked by snow and avalanches, reducing travel time between Srinagar and Leh.
  • Importance: Enhances strategic defense mobility, allowing rapid troop and equipment movement in the border-sensitive Ladakh region, while also supporting tourism and trade.

7. Sangaldan Railway Tunnel, Jammu & Kashmir

  • Location: Katra–Banihal section, Jammu & Kashmir, part of the Jammu–Baramulla rail link.
  • Length: 7.1 km – one of the longest railway tunnels in India.
  • Purpose: Provides all-weather railway connectivity through the snow-laden Himalayan terrain, ensuring safe and fast train movement between Katra and Banihal.
  • Importance: Plays a vital role in strategic logistics, allowing rapid movement of troops and military equipment to sensitive border regions, while also supporting passenger and freight transport in the Kashmir Valley.

8. Andhra Pradesh Electrified Rail Tunnel

  • Location: Cherlopalli–Rapuru section, Andhra Pradesh.
  • Length: 6.6 km – India’s longest electrified railway tunnel.
  • Purpose: Supports freight and passenger train movement, particularly enabling efficient transport of goods to Krishnapatnam Port.
  • Importance: Enhances logistics and regional economic connectivity, reducing transit times for freight and strengthening trade routes along the southeastern coast.

9. Sela Tunnel, Arunachal Pradesh

  • Location: Sela Pass, Arunachal Pradesh, connecting Dirang and Tawang.
  • Length: 1.79 km + 475 m (twin-section tunnel).
  • Purpose: Provides all-weather road connectivity to Tawang, bypassing snow and landslide-prone stretches that often block the highway in winter.
  • Importance: Enhances strategic defense mobility in the sensitive Northeast region, ensures smooth transport for civilians, and supports tourism and local trade.

10. Chamba Tunnel, Uttarakhand

  • Location: Chamba, Uttarakhand, on NH 94 as part of the Chardham Highway project.
  • Length: 440 meters.
  • Purpose: Ensures safer and faster road travel through hilly regions prone to landslides and heavy rainfall.
  • Importance: Facilitates religious tourism, local trade, and transportation, connecting key destinations in Uttarakhand’s Himalayan region.

11. Nechiphu Tunnel, Arunachal Pradesh

  • Location: Arunachal Pradesh, part of strategic road networks in the Eastern Himalayas.
  • Length: 450 meters.
  • Purpose: Provides continuous road connectivity by bypassing steep and dangerous mountain stretches.
  • Importance: Enhances strategic military movement, local transportation, and accessibility for remote communities in Arunachal Pradesh.

12. Karbude Railway Tunnel, Maharashtra

  • Location: Western Ghats, Konkan Railway, Maharashtra.
  • Length: 6.5 km (approx.) – the longest tunnel on the Konkan Railway route.
  • Purpose: Enables smooth passenger and freight train movement through the rugged Western Ghats.
  • Importance: Supports coastal logistics and economic connectivity between Mumbai and Mangalore, aiding port transport and trade.
  • Significance: A critical engineering achievement in Western Ghats railway infrastructure, overcoming steep gradients and difficult terrain to maintain efficient rail operations.
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Important Tunnels in India FAQs

Q1: What is the longest tunnel in India?

Ans: The USBRL Tunnel 50 (Udhampur–Srinagar–Baramulla Rail Link) in Jammu & Kashmir is the longest tunnel in India, measuring 12.775 km.

Q2: Which is the world’s longest high-altitude tunnel in India?

Ans: The Atal Tunnel (Rohtang Tunnel) in Himachal Pradesh is the world’s longest high-altitude tunnel above 3,000 meters, spanning 9.02 km.

Q3: Which tunnel connects Banihal and Qazigund?

Ans: The Pir Panjal Railway Tunnel, 11.215 km long, connects Banihal and Qazigund and provides all-weather railway connectivity to the Kashmir Valley.

Q4: What is the significance of Zoji La Tunnel?

Ans: The Zoji La Tunnel (14.2 km, under construction) will provide year-round, weather-proof connectivity between Sonamarg and Drass in Ladakh.

Q5: Which tunnels improve strategic defense mobility in the Himalayas?

Ans: Tunnels like Atal Tunnel, Zoji La Tunnel, Chenani–Nashri Tunnel, Z-Morh Tunnel, and Sela Tunnel are crucial for rapid troop movement and supply logistics in sensitive border regions.

UPSC Daily Quiz 8 January 2026

UPSC Daily Quiz

[WpProQuiz 62]

 

UPSC Daily Quiz FAQs

Q1: What is the Daily UPSC Quiz?

Ans: The Daily UPSC Quiz is a set of practice questions based on current affairs, static subjects, and PYQs that help aspirants enhance retention and test conceptual clarity regularly.

Q2: How is the Daily Quiz useful for UPSC preparation?

Ans: Daily quizzes support learning, help in revision, improve time management, and boost accuracy for both UPSC Prelims and Mains through consistent practice.

Q3: Are the quiz questions based on the UPSC syllabus?

Ans: Yes, all questions are aligned with the UPSC Syllabus 2025, covering key areas like Polity, Economy, Environment, History, Geography, and Current Affairs.

Q4: Are solutions and explanations provided with the quiz?

Ans: Yes, each quiz includes detailed explanations and source references to enhance conceptual understanding and enable self-assessment.

Q5: Is the Daily UPSC Quiz suitable for both Prelims and Mains?

Ans: Primarily focused on Prelims (MCQ format), but it also indirectly helps in Mains by strengthening subject knowledge and factual clarity.

Sports Authority of India (SAI)

Sports Authority of India (SAI)

Sports Authority of India (SAI) Latest News

The Sports Authority of India (SAI) recently launched a four-day Sports Sciences Workshop for combat sports coaches at its Sports Science Division in New Delhi.

About Sports Authority of India (SAI)

  • It is the apex national sports body of India, established by the Ministry of Youth Affairs and Sports, Government of India.
  • It was set up in 1984 to carry forward the legacy of the IXth Asian Games held in New Delhi in 1982 under the Department of Sports.
  • It is a registered society fully funded by the Government of India.
  • SAl has been entrusted with the twin objectives of promoting sports and achieving sporting excellence at the national and international level.
  • SAI’s primary efforts include widespread talent scouting and training of selected individuals by providing vital inputs like coaching, infrastructure, equipment support, sports kits, competitive exposure, etc.
  • SAI has played a significant role in shaping India’s sports development by providing training to elite athletes and at the same time operating a number of schemes for the identification and development of young talent. 
  • The schemes are being implemented through various regional centres and training centres of SAI spread throughout the country. 
  • SAI implements the following Sports Promotional Schemes across the country to identify talented sportspersons in various age groups and nurture them to excel at the national and international levels:
    • National Centres of Excellence (NCOE)
    • SAI Training Centre (STC)
    • Extension Centre of STC
    • National Sports Talent Contest (NSTC)
  • In addition to that, a number of academic programmes in physical education and sports are also offered by SAI. 
  • SAI is also entrusted with the responsibility of maintaining and utilizing, on behalf of the Ministry of Youth Affairs & Sports, the following stadiums in Delhi, which were constructed/renovated for the IXth Asian Games.
    • Jawaharlal Nehru Sports Stadium
    • Indira Gandhi Sports Complex
    • Major Dhyan Chand National Stadium
    • Dr. Syama Prasad Mookherjee Swimming Pool Complex
    • Dr. Karni Singh Shooting Ranges

Source: PIB

Sports Authority of India (SAI) FAQs

Q1: What is the Sports Authority of India (SAI)?

Ans: It is the apex national sports body of India.

Q2: Under which ministry was the Sports Authority of India established?

Ans: The Ministry of Youth Affairs and Sports, Government of India.

Q3: When was the Sports Authority of India set up?

Ans: It was set up in 1984 to carry forward the legacy of the IXth Asian Games held in New Delhi in 1982.

Q4: How is the Sports Authority of India funded?

Ans: It is fully funded by the Government of India.

Q5: What are the primary efforts undertaken by Sports Authority of India to develop sportspersons?

Ans: Talent scouting and training with support such as coaching, infrastructure, equipment, sports kits, and competitive exposure.

Bio-Bitumen

Bio-Bitumen

Bio-Bitumen Latest News

Recently, the union Minister of State for Science and Technology said that India has entered an era of "Clean, Green Highways" following the successful technology transfer of "Bio-Bitumen via Pyrolysis: From Farm Residue to Roads".

About Bio-Bitumen

  • Bio bitumen is manufactured using renewable organic materials, such as plant-based oils, agricultural waste, or biomass.
  • These materials undergo a special processing method to create a high-quality binder that is similar to traditional bitumen.
  • It is an alternative to petroleum-based bitumen that lowers both carbon emissions and import dependency,
  • Bio-bitumen production involves multiple steps, depending on the source material used. 
  • Significance of Bio-bitumen: Its production results in significantly lower carbon emissions, making it ideal for eco-friendly projects.

Key Processes of Bio-bitumen production 

  • Biomass Collection & Processing:  Raw materials such as plant-based oils, lignin, or algae are collected and pre-processed.
  • Pyrolysis & Bio-Oil Extraction: Thermal decomposition of biomass at controlled temperatures produces bio-oil, which serves as a precursor for bio bitumen.
  • Refining & Modification: Bio-oil undergoes refining and polymer modification to enhance its viscosity, thermal stability, and adhesive properties
  • Blending & Finalization: In some cases, bio bitumen is blended with conventional bitumen to improve performance characteristics while maintaining sustainability benefits.

Key Facts about Bio-Bitumen via Pyrolysis Technology

  • It is an indigenous innovation developed by CSIR‑Central Road Research Institute (CSIR-CRRI) New Delhi and CSIR‑Indian Institute of Petroleum Dehradun (CSIR-IIP)".
  • It involves the collection of post-harvest rice straw, its palletisation, and conversion into bio-oil through pyrolysis, which is then blended with conventional bitumen.
  • Extensive laboratory tests have shown that 20–30 per cent of conventional bitumen can be safely replaced without compromising performance. 

Source: DD News

Bio-Bitumen FAQs

Q1: What is Bio-Bitumen primarily used for?

Ans: Construction and road paving

Q2: How is Bio-Bitumen typically produced?

Ans: From biomass like vegetable oils or waste materials

Nagauri Ashwagandha

Nagauri Ashwagandha

Nagauri Ashwagandha Latest News

Recently, the Centre has officially granted a Geographical Indication (GI) tag to 'Nagauri Ashwagandha'. 

About Nagauri Ashwagandha

  • It is mainly grown in the Nagaur district of Rajasthan.
  • Nagaur's dry climate and sandy soil are ideally suited for Ashwagandha cultivation.
  • It has longer, thicker roots rich in medicinal compounds, particularly alkaloids.
  • Its berries are known for their dark, bright red colour, which is considered a clear indicator of superior quality.
  • It has brittle and starchy roots. The ‘Nagori Ashwagandha’ is the supreme among all Ashwagandha varieties in arid regions.

Key Facts about Ashwagandha

  • Ashwagandha (Withania somnifera) is an important ancient plant.
  • Other names: Indian ginseng or Indian winter cherry

Required Climatic Condition for Ashwagandha

  • It grows in dry and sub-tropical regions.
  • Soil: It grows well in sandy loam or light red soil having pH 7.5 to 8.0 with good drainage. 
  • Climate: It is grown as a late rainy season (kharif) crop
  • Rain: The semi-tropical areas receiving 500 to 750 mm rainfall are suitable for its cultivation as a rainfed crop. 
  • Temperature: It can tolerate a temperature range of 20 to 38 degree Celsius.
  • Major Ashwagandha Producing states: Madhya Pradesh, Rajasthan, Punjab, Haryana, Uttar Pradesh, Gujarat, Maharashtra and Madhya Pradesh are the of the country. 

Benefits of Ashwagandha

  • It has been in use as a medicinal plant for thousands of years, especially in traditional Ayurvedic medicine.
  • It is often called an adaptogen, meaning it helps the body adapt to stressors and restore balance.
  • Its other benefits are reducing inflammation, increasing energy, alleviating anxiety, ease pain, and improving sleep.
  • Different parts of the ashwagandha plant, such as the root, leaves, and berries, may have different concentrations of bioactive compounds.

Source: ETV

Nagauri Ashwagandha FAQs

Q1: What is Nagauri Ashwagandha primarily known for?

Ans: Its medicinal properties

Q2: Where is Nagauri Ashwagandha mainly cultivated?

Ans: Rajasthan

National Quality Assurance Standards

National Quality Assurance Standards

National Quality Assurance Standards Latest News

Recently, a total of 50,373 public health facilities across all States and Union Territories have been certified under the National Quality Assurance Standards (NQAS).

About National Quality Assurance Standards

  • It is a comprehensive quality framework established by the Ministry of Health and Family Welfare (MoHFW).
  • It is aimed at ensuring and enhancing the quality of healthcare services provided at public health facilities.
  • The NQAS began in 2015 with just 10 certified healthcare facilities.
  • It was initially focusing on District Hospitals to ensure safe, patient-centric, and quality-assured services.
  • NQAS are currently available for District Hospitals, Sub-District Hospitals, Community Health Centres, Ayushman Arogya Mandir–PHCs, AAM–UPHCs, and AAM–Sub Health Centres.
  • Purpose: These standards are primarily meant for providers to assess their own quality for improvement through pre-defined standards and to bring up their facilities for certification. 
  • These are broadly arranged under 8 "Areas of Concern" namely;
    • Service Provision, Patient Rights, Inputs, Support Services, Clinical Care, Infection Control, Quality Management and Outcome

Source: PIB

National Quality Assurance Standards FAQs

Q1: What is the primary objective of NQAS?

Ans: To ensure quality healthcare services in public facilities

Q2: Which ministry is associated with NQAS implementation?

Ans: Ministry of Health and Family Welfare

India’s Progress on Climate Targets: Achievements and Structural Gaps

Climate Targets

Climate Targets Latest News

  • India’s progress on its climate targets is under scrutiny as recent assessments highlight a gap between emission intensity reduction and absolute emission control. 

India’s Climate Commitments under the Paris Agreement

  • At the 2015 Paris Climate Summit, India articulated its climate strategy based on the principle of common but differentiated responsibilities
  • Recognising its low historical per capita emissions, India committed to four major climate targets:
    • Reducing emissions intensity of GDP by 33-35% from 2005 levels by 2030
    • Achieving 40% non-fossil fuel power capacity by 2030 (later enhanced to 50%)
    • Installing 175 GW of renewable energy capacity by 2022
    • Creating an additional carbon sink of 2.5-3 billion tonnes of CO₂ equivalent through forests
  • These commitments aimed to balance developmental needs with climate responsibility in a growing economy.

Progress in Emission Intensity Reduction

  • India has made notable progress in reducing emissions intensity, emissions per unit of GDP. 
  • By 2020, emissions intensity had declined by around 36% compared to 2005 levels, allowing India to meet its original Paris target nearly a decade ahead of schedule.
  • This improvement has been driven by three structural factors. 
    • First, the rapid expansion of non-fossil electricity sources such as solar, wind, hydro, and nuclear significantly reduced the carbon intensity of power generation. 
    • Second, India’s economic structure has gradually shifted towards services and digital sectors, which are less emission-intensive than manufacturing. 
    • Third, national efficiency initiatives like the Perform, Achieve and Trade (PAT) scheme and the UJALA LED programme have reduced electricity demand growth in industries and households.
  • However, these gains largely reflect relative decoupling, where emissions grow more slowly than GDP rather than declining in absolute terms.

Persistently High Absolute Emissions

  • Despite improvements in emissions intensity, India’s absolute greenhouse gas emissions remain high. 
  • Territorial emissions stood at approximately 2,959 million tonnes of CO₂ equivalent in 2020 and have continued to rise thereafter.
  • This highlights a key limitation of intensity-based metrics. While GDP growth has outpaced emission growth, total emissions have not declined. 
  • Sector-wise analysis reveals that emissions from cement, steel, and transport continue to increase, even as the growth rate of emissions from the power sector has moderated. 
  • As India is now the world’s third-largest emitter in absolute terms, the challenge lies in converting intensity gains into real emission reductions.

Renewable Energy Expansion and Generation Gap

  • India’s renewable energy capacity expansion has been impressive. Non-fossil fuel capacity increased from about 30% in 2015 to over 50% by mid-2025. 
  • Solar power has led this growth, rising from less than 3 GW in 2014 to over 110 GW by 2025, supported by falling tariffs and domestic manufacturing. 
  • Wind power growth, however, has been slower due to land availability, grid connectivity issues, and state-level regulatory hurdles.
  • A major concern is the gap between installed capacity and actual electricity generation
    • Although non-fossil sources account for over half of installed capacity, they contribute only around 22% of total electricity generation. 
  • Coal continues to dominate power generation because of its ability to provide stable baseload electricity. 
  • Storage limitations remain a critical bottleneck, with battery energy storage capacity far below projected requirements for the next decade.

Forest Carbon Sink and Governance Challenges

  • India is close to achieving its forest-based carbon sink target on paper. 
  • Official estimates suggest that only about 0.2 billion tonnes of additional sequestration is required to meet the 2030 goal. However, definitional and governance issues complicate this assessment.
  • The Forest Survey of India’s broad definition of forest cover includes plantations, monocultures, and tree cover outside natural forests. 
  • While this inflates carbon stock figures, it does not necessarily reflect ecological health or biodiversity restoration. 
  • Additionally, large funds under the Compensatory Afforestation Fund Act remain underutilised in several States, weakening implementation outcomes. 
  • Climate stress, including heat and water scarcity, further threatens forest productivity, especially in ecologically sensitive regions.

Source: TH

Climate Targets FAQs

Q1: What climate targets did India commit to under the Paris Agreement?

Ans: India committed to reducing emissions intensity, expanding non-fossil power, increasing renewables, and creating a forest carbon sink.

Q2: Has India met its emissions intensity reduction target?

Ans: Yes, India reduced emissions intensity by about 36% by 2020, ahead of its 2030 target.

Q3: Why are India’s absolute emissions still high?

Ans: Because GDP growth has outpaced emission growth, leading to intensity reduction without absolute emission decline.

Q4: Why does coal still dominate India’s electricity generation?

Ans: Coal provides stable baseload power, while renewables face intermittency and storage limitations.

Q5: What is the main challenge in India’s forest carbon strategy?

Ans: The challenge lies in over-reliance on plantations and weak governance rather than ecological restoration.

Earth’s Rotations Day 2026, History, Significance, About Earth’s Rotation

Earth's Rotations Day 2026

Earth’s Rotation Day is observed every year on January 8 to commemorate one of the most important scientific discoveries about our planet’s movement. The day marks the anniversary of French physicist Léon Foucault’s 1851 experiment, which provided clear experimental proof that the Earth rotates on its axis. This observance helps people understand how Earth’s rotation shapes daily life, climate patterns, and natural phenomena.

Earth's Rotations Day 2026

Earth’s Rotations Day 2026 is celebrated on 8 January to raise awareness about the continuous spinning of the Earth on its axis. The day marks the historic Foucault Pendulum experiment of 1851, which provided clear proof of Earth’s rotation. This natural movement governs the day–night cycle and plays a key role in climate and wind patterns. The occasion promotes understanding of basic Earth science and astronomy.

Earth's Rotations Day 2026 History

  • The idea that the Earth rotates on its axis was first proposed by Greek philosophers around 470 BC, though it lacked experimental proof.
  • For several centuries, scientists debated Earth’s motion until a breakthrough occurred in the 19th century.
  • In 1851, French physicist Léon Foucault conclusively proved Earth’s rotation through his famous pendulum experiment, which showed the planet rotating beneath the swinging pendulum.

About Earth’s Rotation

  • Earth’s rotation refers to the continuous spinning of the planet around an imaginary axis joining the North Pole and the South Pole.
  • The Earth takes approximately 23 hours, 56 minutes, and 4 seconds to complete one rotation, known as a sidereal day, while the solar day is 24 hours.
  • Earth rotates from west to east, which is why the Sun appears to rise in the east and set in the west.
  • The rotational speed is highest at the equator (about 1,670 km per hour) and gradually decreases toward the poles.
  • The Earth’s axis is tilted at about 23.5 degrees, and this tilt, along with rotation and revolution, influences seasons and climatic variations.
  • Earth’s rotation is responsible for the day–night cycle, which regulates biological clocks and daily activities of living organisms.
  • The rotation causes the Coriolis Effect, leading to the deflection of winds and ocean currents to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.
  • Due to gravitational interaction with the Moon, Earth’s rotation is slowly decreasing in speed, causing a gradual increase in the length of a day over millions of years.

Earth's Rotations Day 2026 Significance

Earth’s Rotation Day 2026 highlights the importance of Earth’s axial movement and its role in shaping natural processes on the planet. The day also honors Léon Foucault’s experiment, which helped establish scientific understanding of Earth’s rotation.

  • Explains the day-night cycle, which is essential for life on Earth.
  • Helps understand weather systems and wind circulation through the Coriolis Effect.
  • Regulates time measurement, forming the basis of hours and days.
  • Influences climate patterns and seasons when combined with Earth’s revolution.
  • Promotes scientific curiosity and Earth science education among students.

Earth's Rotations Day 2026 FAQs

Q1: What is Earth’s Rotations Day?

Ans: Earth’s Rotations Day is observed to spread awareness about the Earth’s rotation on its axis and its impact on day–night cycles, climate, and life on the planet.

Q2: When is Earth’s Rotations Day 2026 observed?

Ans: Earth’s Rotations Day is observed every year on January 8, including in 2026.

Q3: Why is January 8 important for Earth’s Rotations Day?

Ans: January 8 marks the anniversary of Léon Foucault’s 1851 pendulum experiment, which proved that the Earth rotates on its axis.

Q4: How does Earth’s rotation affect daily life?

Ans: Earth’s rotation causes day and night, influences weather and wind patterns, and regulates biological clocks of living organisms.

Q5: Does Earth’s rotation remain constant?

Ans: No, Earth’s rotation is slowly slowing down due to gravitational interactions with the Moon, leading to a gradual increase in the length of a day.

Dust Experiment (DEX)

Dust Experiment (DEX)

Dust Experiment (DEX) Latest News

Recently, the Indian Space Research Organisation confirmed through its first-ever Dust Experiment (DEX) that an interplanetary dust particle enters Earth’s atmosphere approximately every 1,000 seconds.

About Dust Experiment (DEX)

  • It is the first Indian-made instrument to hunt for these high speed Interplanetary Dust Particles (IDPs). 
  • It is the first-of-its-kind instrument designed to detect such high-transient particles.
  • It is developed by the Physical Research Laboratory, Ahmedabad.
  • It was flown on PSLV Orbital Experimental Module (POEM) of the PSLV-C58 XPoSat Mission on January 1, 2024.

Features of Dust Experiment (DEX)

  • It is a compact instrument tuned to hear impacts, capturing vital data.
  • At the core of the experiment lies a 3-kilogram dust detector based on the cutting-edge hypervelocity principle designed to capture high-speed space dust impacts with only 4.5 W power consumption.
  • It rocketed to an altitude of 350Km.
  • DEX is a blueprint of the detector which can study the cosmic dust particle at any planet having an atmosphere or no atmosphere.

Significance of the Dust Experiment (DEX)

  • Its data redefines our understanding of the universe and charts the path for safe human deep-space missions.
  • Understanding and collecting data on interplanetary dust in Earth’s atmosphere will also be valuable for planning Gaganyaan missions.

What are Interplanetary Dust Particles (IDPs)? 

  • Interplanetary dust refers to micrometer-scale particles originating from the solar system. 
  • These are microscopic shrapnel from comets and asteroids that form our atmosphere's mysterious "meteor layer", and show up as “shooting stars” at night. 
  • These can be analyzed to gain insights into their origins, formation mechanisms, and the processes that occurred in early solar and presolar environments.

 Source: IE

Dust Experiment (DEX) FAQs

Q1: What is cosmic dust composed of?

Ans: Small solid particles in space, including silicates and carbon compounds

Q2: Where is cosmic dust commonly found?

Ans: In interstellar space, galaxies, and planetary systems

PSLV-C62 Mission

PSLV-C62 Mission

PSLV-C62 Mission Latest News

ISRO’s PSLV-C62 rocket is set to lift off from the first launchpad at Sriharikota, marking India’s first space launch of 2026.

About PSLV-C62 Mission

  • It is a multi-payload mission of the Indian Space Research Organisation (ISRO) that will carry one primary satellite and 18 secondary payloads into space.
  • It is ISRO’s first space launch of 2026.
  • It is scheduled to lift off from Sriharikota.
  • The mission's primary payload is the earth observation satellite EOS-N1 (codenamed ‘Anvesha’), an hyperspectral imaging satellite developed primarily for the Defence Research and Development Organisation (DRDO) for strategic purposes.
    • Unlike conventional imaging satellites, hyperspectral satellites can “see” the Earth in hundreds of wavelengths, allowing them to identify materials and objects with far greater precision.
    • This capability makes EOS-N1 a high-value asset for national security, border surveillance and strategic monitoring. 
    • At the same time, the satellite will also be used for civilian applications such as agriculture planning, urban mapping, mineral detection, and environmental monitoring.
  • PSLV-C62 will also carry Europe's Kestrel Initial Demonstrator (KID), an experimental mission involving a small re-entry capsule developed in collaboration with a Spanish startup. 
    • The capsule is expected to re-enter Earth’s atmosphere and splash down in the South Pacific Ocean.
  • Additionally, 17 commercial payloads from startups and research institutions across India, Mauritius, Luxembourg, the UAE, Singapore, Europe, and the United States are manifested for the PSLV-C62 Mission.
  • Several Indian startups and academic institutions are also flying their satellites. 
    • These include OrbitAID Aerospace’s AayulSAT, CV Raman Global University’s CGUSAT-1, Dhruva Space’s DA-1, Space Kidz India’s SR-2, Assam Don Bosco University’s Lachit-1, Akshath Aerospace’s Solaras-S4, and Dayanand Sagar University’s DSAT-1.
  • Bengaluru-based OrbitAID Aerospace’s AayulSAT stands out as a historic first. 
    • It is India’s maiden on-orbit satellite refuelling payload. 
    • The mission aims to demonstrate technologies that could extend the operational life of satellites by enabling in-orbit servicing and refuelling.
    • Such capabilities are seen as crucial for tackling space debris and improving sustainability in Earth’s increasingly crowded orbital environment.

Source: MC

PSLV-C62 Mission FAQs

Q1: What is the PSLV-C62 Mission?

Ans: It is a multi-payload mission of ISRO carrying one primary satellite and 18 secondary payloads.

Q2: What is the primary payload of the PSLV-C62 Mission?

Ans: The Earth observation satellite EOS-N1 (codenamed Anvesha).

Q3: For which organisation was EOS-N1 primarily developed?

Ans: The Defence Research and Development Organisation (DRDO).

Q4: Which European experimental payload is carried onboard PSLV-C62?

Ans: Kestrel Initial Demonstrator (KID).

Tadoba-Andhari Tiger Reserve

Tadoba-Andhari Tiger Reserve

Tadoba Andhari Tiger Reserve Latest News

The Tadoba Andhari Tiger Reserve (TATR) recently undertook a sterilisation and vaccination program to deal with the growing menace of stray dogs.

About Tadoba Andhari Tiger Reserve 

  • It is located in the Chandrapur district in Maharashtra.
  • It is the largest and oldest tiger reserve in Maharashtra. 
  • It covers an area of 1,727 sq.km. 
  • Established in 1955, the reserve consists of Tadoba National Park and Andhari Wildlife Sanctuary.
  • The word ‘Tadoba’ is derived from the name of the God “Tadoba” or “Taru,” which is praised by local tribal people of this region, and “Andhari” is derived from the name of the Andhari River that flows in this area.
  • It has corridor linkages with Nagzira-Navegaon and Pench Tiger Reserves within the State.
  • It has a hilly topography with an average elevation of 200–350 metres.
  • Drainage: There are two lakes and one waterway in the reserve: Tadoba Lake, Kolsa Lake, and the Tadoba River.
  • Vegetation: Biogeographically, the reserve falls in the Central plateau province of the Deccan peninsula, with tropical dry deciduous forests and a typical Central Indian faunal assemblage.
  • Flora: It is blessed with thick forests covered with teak trees and other vegetation such as crocodile bark, salai, tendu, karaya gum, and mahua madhuca.
  • Fauna
    • Apart from tigers, the reserve is home to Indian leopards, sloth bears, Indian gaur (bison), wild dogs (dholes), striped hyenas, marsh crocodiles, sambar deer, chital (spotted deer), barking deer, and four-horned antelopes (chousingha).
    • It is also a birdwatcher’s paradise, with over 250 species of birds, including crested serpent eagles, grey-headed fish eagles, paradise flycatchers, and hornbills.

Source: WEEK

Tadoba Andhari Tiger Reserve Latest News FAQs

Q1: Where is Tadoba Andhari Tiger Reserve (TATR) located?

Ans: Chandrapur district of Maharashtra.

Q2: Which is the largest and oldest tiger reserve in Maharashtra?

Ans: Tadoba Andhari Tiger Reserve (TATR)

Q3: Which two protected areas together form Tadoba Andhari Tiger Reserve?

Ans: Tadoba National Park and Andhari Wildlife Sanctuary.

Q4: Which water bodies are part of the drainage system of Tadoba Andhari Tiger Reserve?

Ans: Tadoba Lake, Kolsa Lake, and the Tadoba River.

Q5: What type of forest vegetation is found in Tadoba Andhari Tiger Reserve?

Ans: Tropical dry deciduous forests.

Daily Editorial Analysis 8 January 2026

Daily Editorial Analysis

‘Natgrid’, the Search Engine of Digital Authoritarianism

Context

  • The 2008 Mumbai attacks, or 26/11, marked a pivotal transformation in India’s security governance.
  • The televised siege and subsequent political debate centred on intelligence failure, particularly the inability to consolidate fragmented information about the movements and identity of the attackers.
  • This event created an urgent climate for reform and opened political space for technological expansion within the national security apparatus.
  • The most ambitious of these expansions was the National Intelligence Grid (NATGRID), envisioned as a centralized data infrastructure capable of supporting counter-terrorism operations.
  • Over time, however, NATGRID has evolved into a broader surveillance architecture with legal, constitutional, and societal implications.

Origin, Expansion and Transformation of NATGRID

  • Origins: A Technological Fix for Security Gaps

    • In the aftermath of the attacks, policymakers advanced a compelling counterfactual: had data trail fragments been aggregated and analysed in time, the attack might have been prevented.
    • NATGRID emerged as the institutional embodiment of this belief. Designed to allow multiple security agencies to query a wide range of governmental databases, it promised technological interoperability across organizational silos.
    • The project was approved through executive action rather than parliamentary legislation, raising concerns about the absence of statutory safeguards, privacy protections, and democratic oversight.
    • Although initially plagued by delays that fuelled scepticism, NATGRID would gradually mature into a functional system rather than a symbolic response.
  • Expansion and Transformation

    • Recent developments indicate that NATGRID has undergone both operational scaling and conceptual broadening.
    • Data request volumes number in the tens of thousands each month, flowing not only from central intelligence units but also from state-level police agencies.
    • What began as a counter-terror resource has migrated into routine policing functions, expanding the scope of permissible queries and investigators with access.
    • More significant still is its integration with the National Population Register (NPR), a comprehensive demographic database containing detailed information on households and lineages.
    • The NPR’s political resonance, given its proximity to citizenship debates, intensifies concerns about population-wide profiling.
    • Through this integration, NATGRID appears to transition from monitoring specific security threats to mapping entire populations and their relational linkages.
    • Alongside integration, NATGRID now employs advanced analytical tools.
    • Platforms capable of entity resolution link fragmented digital identities across databases, while facial recognition systems trawl identity and telecommunications records.
    • In combination with machine learning models capable of predictive inference, NATGRID shifts from reactive investigation toward anticipatory surveillance.

New Risks: Bias and Scale in Algorithmic Policing

  • Two contemporary risks distinguish this surveillance paradigm from earlier forms. The first lies in algorithmic bias.
  • Data-driven policing systems do not operate on neutral ground; they inherit distortions embedded in the data they ingest.
  • In settings where suspicion already falls unevenly along caste, religious, or geographic lines, analytics risk amplifying inequities under a veneer of objectivity.
  • The consequences are unevenly distributed: administrative inconvenience for some, existential vulnerability for others.
  • The second is the tyranny of scale. While officials emphasize query logging and sensitivity classifications as safeguards, procedural tracking does little to prevent normalisation when tens of thousands of queries are executed monthly.
  • Without independent oversight, internal logging becomes administrative ritual, not accountability.

Misdiagnosing the Security Problem

  • Reliance on expansive surveillance technology obscures a more fundamental lesson.
  • The failures exposed during 26/11 stemmed less from insufficient data than from institutional fragility: inadequate training, poor coordination, and lack of professional autonomy.
  • Security also suffers from political interference and informational opacity, conditions that technological aggregation alone cannot remedy.
  • As NATGRID extends into ordinary policing, the original justification of preventing catastrophic terror recedes, while the risks to civil liberties intensify.

The Erosion of Oversight

  • Despite the Supreme Court’s recognition of a constitutional right to privacy in 2017, national surveillance programs remain largely unexamined by legislative or judicial mechanisms.
  • Public discourse has narrowed, with cultural narratives and political rhetoric rendering criticism of security institutions suspect or unpatriotic.
  • In such an environment, even evaluating subsequent attacks or investigating institutional failures becomes politically fraught.

Conclusion

  • The shock of 26/11 reshaped India’s security imagination, but the remedy pursued has been technologically expansive and democratically thin.
  • NATGRID illustrates a shift from targeted counter-terrorism toward population-wide surveillance, enabled by modern analytics and legitimized through fear.
  • Strengthening national security ultimately requires robust institutions, transparent intelligence practices, and independent oversight.
  • Without these foundations, surveillance risks normalization, fostering an architecture of suspicion at the expense of democratic accountability.

‘Natgrid’, the Search Engine of Digital Authoritarianism FAQs

 Q1. What triggered the creation of NATGRID?
Ans. NATGRID was created in response to perceived intelligence failures during the 2008 Mumbai attacks.

Q2. How was NATGRID originally justified by policymakers?
Ans. It was justified as a technological solution to aggregate fragmented data for counter-terrorism purposes.

Q3. Why is the integration with the National Population Register considered significant?
Ans. It is significant because it shifts NATGRID from tracking specific threats to mapping entire populations.

Q4. What are the two main risks associated with NATGRID’s evolution?
Ans. The main risks are algorithmic bias and large-scale surveillance without independent oversight.

Q5. What does the analysis argue is needed for genuine security improvement?
Ans. Genuine security improvement requires institutional reform, transparency, and democratic oversight rather than mass surveillance.

Source: The Hindu


Fine-tune this Signal to Sharpen India’s AMR Battle

Context

  • Prime Minister Narendra Modi’s remarks on antimicrobial resistance (AMR) during the 129th edition of Mann Ki Baat on December 28, 2025 may represent a pivotal moment for national awareness and policy focus.
  • His statements have been viewed as an opportunity for collective recognition in addressing what many medical experts regard as India’s next major public health crisis.

From Specialist Concern to Mass Awareness

  • For years, AMR has occupied a largely technical space dominated by infectious disease experts, health institutions, and government bodies.
  • Strategic interventions such as the National Action Plan on AMR and targeted regulatory actions against antibiotic misuse have been initiated, yet these measures have not significantly altered public behaviour.
  • PM Modi’s address directly confronted the behavioural roots of AMR, emphasizing thoughtless and indiscriminate use of antibiotics and cautioning against self-medication.
  • By referencing Indian Council of Medical Research data illustrating decreased antibiotic efficacy against common infections such as pneumonia and urinary tract infections, the speech connected scientific evidence with everyday risks.
  • His closing advisory, Avoid taking medicines by yourself, particularly antibiotics, transformed AMR from an abstract clinical problem into a matter of individual and collective responsibility.
  • This mainstreaming of AMR may enable broader societal engagement, particularly because public behaviour is a major determinant of resistance patterns.
  • Expanding awareness at the population level targets the widest base of influence, potentially achieving more than specialized policy instruments alone.

The Limits of Awareness and the Need for Structured Surveillance

  • The Limits of Awareness

    • Awareness, however, addresses only one dimension of a problem that has grown into a multi-sectoral crisis.
    • AMR in India draws from intersecting drivers involving human health, animal health, agriculture, and environmental contamination.
    • A One Health approach has emerged as the most coherent framework for coordinating interventions across these domains.
    • Drug use in livestock production, untreated discharge of pharmaceutical waste, and hospital-based infections contribute cumulatively to resistance patterns, demanding a shift from siloed action to integrated governance.
  • Need for Structured Surveillance

    • At the current juncture, surveillance capacity is a critical bottleneck.
    • Comprehensive AMR surveillance remains limited in scale, geographical coverage, and institutional diversity.
    • Although the National AMR Surveillance Network (NARS-Net), established in 2013, now includes 60 sentinel laboratories, national reporting to the World Health Organization’s GLASS system in 2023 contained data from only 41 sites across 31 States and Union Territories.
    • Urban tertiary hospitals dominate these datasets, whereas secondary and primary care centres, where a large portion of antibiotic prescriptions occur, remain sparsely represented.
    • This skews the national picture and impedes the ability to detect emerging resistance patterns outside major metropolitan centres.
    • Inclusion of private healthcare providers is also essential; India’s healthcare landscape involves substantial private sector participation, particularly for outpatient consultations and inpatient care in non-urban areas.

Political Will, Public Infrastructure, and the Challenge Ahead

  • The 2015 WHO Global Action Plan on AMR outlines five central pillars: raising awareness, strengthening surveillance and research, reducing infections, optimising antimicrobial use, and incentivising innovation.
  • PM Modi’s remarks advance the awareness pillar, but durable progress across the remaining pillars requires sustained political will and resource allocation.
  • Surveillance expansion demands substantial investments in laboratory infrastructure, trained personnel, diagnostic systems, and data integration, areas that typically receive limited health budgeting.
  • Reducing infection rates depends on improved sanitation, vaccination coverage, and hospital infection control practices, while optimization of antibiotic use requires both prescriber discipline and retail regulation.
  • India’s large informal pharmaceutical market and the ease of antibiotic procurement without prescription remain significant obstacles.
  • Long-term sustainability also hinges on support for new drug discovery, diagnostics, and vaccines, fields that carry high development costs and uncertain commercial returns.
  • Global experience demonstrates that without structured incentive mechanisms, pharmaceutical innovation in antibiotics stagnates even as resistance accelerates.

Conclusion

  • PM Modi’s speech represents a potentially transformative moment for AMR governance by shifting it from a specialized policy discourse to a matter of public concern.
  • Yet AMR remains a systemic crisis requiring coordinated interventions rooted in surveillance, regulation, infrastructure, and multi-sectoral cooperation.
  • Awareness may catalyse change, but only sustained action can ensure that resistance patterns stabilize rather than escalate.

Fine-tune this Signal to Sharpen India’s AMR Battle FAQs

Q1. What issue did the Prime Minister highlight in his 2025 broadcast?
Ans. He highlighted antimicrobial resistance as a growing public health concern in India.

Q2. Why was his statement considered significant?
Ans. It brought the topic out of specialist circles and into mainstream public awareness.

Q3. What behavioural factor contributes most to AMR in India?
Ans. Self-medication and the irrational use of antibiotics contribute most to AMR.

Q4. Why is surveillance expansion important for addressing AMR?
Ans. Surveillance expansion is important because current data excludes many non-urban and lower-tier healthcare settings.

Q5. What broader framework is needed to effectively tackle AMR?
Ans. A One Health framework is needed because AMR spans human, animal, and environmental health.

Source: The Hindu

Daily Editorial Analysis 8 January 2026 FAQs

Q1: What is editorial analysis?

Ans: Editorial analysis is the critical examination and interpretation of newspaper editorials to extract key insights, arguments, and perspectives relevant to UPSC preparation.

Q2: What is an editorial analyst?

Ans: An editorial analyst is someone who studies and breaks down editorials to highlight their relevance, structure, and usefulness for competitive exams like the UPSC.

Q3: What is an editorial for UPSC?

Ans: For UPSC, an editorial refers to opinion-based articles in reputed newspapers that provide analysis on current affairs, governance, policy, and socio-economic issues.

Q4: What are the sources of UPSC Editorial Analysis?

Ans: Key sources include editorials from The Hindu and Indian Express.

Q5: Can Editorial Analysis help in Mains Answer Writing?

Ans: Yes, editorial analysis enhances content quality, analytical depth, and structure in Mains answer writing.

Thanthai Periyar Wildlife Sanctuary

Thanthai Periyar Wildlife Sanctuary

Thanthai Periyar Wildlife Sanctuary Latest News

Recently, the first phase of the All-India Tiger Estimation-2026 (AITE-26) commenced in the Thanthai Periyar Wildlife Sanctuary. 

About Thanthai Periyar Wildlife Sanctuary

  • Location: It is located in Bargur Hills in Erode District of Tamil Nadu.
  • It is located between the Sathyamangalam Tiger Reserve of Tamil Nadu and the Male Mahadeshwara Wildlife Sanctuary and the Cauvery Wildlife Sanctuary of Karnataka.
  • It is one of the tiger corridors identified by the National Tiger Conservation Authority.
  • The region is also part of the Nilgiris Elephant Reserve.
  • These forests occupy a prominent position in the Eastern Ghats as they merge with the Western Ghat at the Nilgiris.
  • Rivers: It is the catchment of the Palar River that drains into the Cauvery River.
  • Fauna: It is home to a healthy population of large herbivores including elephants and the Indian Gaur.

Key Facts about All-India Tiger Estimation

  • It is conducted once every four years
  • Purpose: To assess the status of the tiger population in the country.
  • Past Estimations: Five cycles have already been conducted in 2006, 2010, 2014, 2018, and 2022.

Source: TH

Thanthai Periyar Wildlife Sanctuary FAQs

Q1: Where is the Thanthai Periyar Wildlife Sanctuary located?

Ans: Tamil Nadu

Q2: What is the primary significance of Thanthai Periyar Wildlife Sanctuary?

Ans: It's a critical corridor for elephant and tiger movement

Bigha

Bigha

Bigha Latest News

The Assam government recently completed an eviction drive to clear alleged encroachment from around 6,200 bighas (nearly 830 hectares) of land in Burhachapori Wildlife Sanctuary, affecting 710 families.

About Bigha

  • It is a traditional unit of land measurement commonly used in India, Bangladesh, and Nepal. 
  • It is generally used for the measurement of agricultural land, although it may also be used for residential plots. 
  • Historical Context:
    • The origins of Bigha trace back to ancient South Asian practices. 
    • It originated from the Sanskrit term ‘vigraha,’ which translates to division. 
    • Before the introduction of modern units like the acre or hectare, landowners and farmers relied on Bigha to calculate land for cultivation, taxation, and trade. 
    • Over time, it became deeply rooted in the cultural and economic fabric of these regions.
  • Popular in states where farming is common, Bigha is used by farmers when measuring plots and negotiating land prices.
  • This unit is most commonly used in the following Indian states: Assam, Bihar, Gujarat, Haryana, Himachal Pradesh, Jharkhand, Madhya Pradesh, Punjab, Rajasthan, Uttarakhand, Uttar Pradesh, and West Bengal.
  • The exact measurement of bigha differs from state to state
    • For instance, in West Bengal and Assam, one bigha equals about 14,400 sq.ft., while in Punjab, it measures approximately 9,070 sq.ft. 
  • There is no national standard for the size of a bigha, and it is typically smaller than an acre, which is 43,560 sq.ft. or 4,047 sq.m.
  • Bigha has several subunits in different places; some common ones are:
    • Katha
    • Biswa
    • Nalli
  • Bigha in Bangladesh and Nepal:
    • Bangladesh: Standardized under British rule at 14,400 sq.ft (1,340 sq.m.).
    • Nepal: A bigha equals about 6,772.63 sq.m., with local variations.

Key Facts about Burhachapori Wildlife Sanctuary

  • It is located on the southern bank of the river Brahmaputra in the Sonitpur district, Assam
  • It is located on the north side of Laokhowa Wildlife Sanctuary and shares an integral transboundary landscape of the Laokhowa-Burachapori Wildlife Sanctuary ecosystem. 
  • Both the sanctuary was notified as a buffer zone of the Kaziranga Tiger Reserve in 2007.
  • Most of the low-lying areas of the sanctuary are vulnerable to flooding during summer. 
  • Flora: It is enveloped and adorned by wet alluvial grasslands, riparian forests, and semi-evergreen forests.
  • Fauna:
    • It is a habitat of a wide range of wild animals, including tigers, elephants, wild buffalos, one-horned rhinoceros, hog deer, and wild boar.
    • The avian inhabitants feature species like the Bengal florican, black-necked stork, open-billed stork, white-eyed pochard, mallard, spotbill, large whistling teal, and numerous others.

Source: PRINT

Bigha FAQs

Q1: What is Bigha?

Ans: Bigha is a traditional unit of land measurement commonly used in India, Bangladesh, and Nepal.

Q2: For what type of land is Bigha generally used?

Ans: It is mainly used to measure agricultural land, and sometimes residential plots.

Q3: In which Indian states is Bigha most commonly used?

Ans: Assam, Bihar, Gujarat, Haryana, Himachal Pradesh, Jharkhand, Madhya Pradesh, Punjab, Rajasthan, Uttarakhand, Uttar Pradesh, and West Bengal.

Q4: Does Bigha have a uniform measurement across India?

Ans: No, the measurement of Bigha varies from state to state.

Open Network for Digital Commerce (ONDC)

Open Network for Digital Commerce (ONDC)

Open Network for Digital Commerce (ONDC) Latest News

The Archaeological Survey of India (ASI) recently enabled online ticket booking for "over 170 centrally protected monuments and museums" on the Open Network for Digital Commerce (ONDC), seeking to expand digital access.

About Open Network for Digital Commerce (ONDC)

  • It is a transformative initiative by the Department for Promotion of Industry and Internal Trade (DPIIT), Ministry of Commerce, Government of India, aimed at democratizing digital commerce. 
  • Launched in April 2022, ONDC aims at promoting open networks for all aspects of the exchange of goods and services over digital or electronic networks. 
  • ONDC represents a step toward digital commerce democratization, shifting it from a platform-centric model—where a few e-commerce giants dominate the market—to an open, interoperable platform where buyers and sellers can interact regardless of the platforms they’re using. 
  • ONDC is based on open-sourced methodology, using open specifications and open network protocols independent of any specific e-commerce platform. 
  • It envisions creating a level playing field for sellers, buyers, and service providers across India, particularly small and medium enterprises (MSMEs). 
  • The ONDC initiative has several key objectives:
    • Democratization of Commerce: Break the dominance of large e-commerce platforms by enabling interoperability across networks.
    • Inclusivity: Empower small businesses, retailers, and local artisans to access the digital marketplace.
    • Cost Efficiency: Lower the cost of customer acquisition and transaction processing for sellers.
    • Market Expansion: Bridge regional and linguistic gaps, bringing untapped markets into the fold of digital commerce.
    • Customer Empowerment: Increase options for buyers by providing access to a broader array of sellers.
  • It will enable local commerce across segments, such as mobility, grocery, food order and delivery, hotel booking and travel, among others, to be discovered and engaged by any network-enabled application.
  • It comprises buyer-side apps where consumers can place orders, seller-side apps that onboard merchants and display their listings, and logistics platforms that handle deliveries.
  • Benefits:
    • It offers small retailers an opportunity to provide their services, and goods to buyers across the country through an e-commerce system.
    • ONDC enables merchants to save their data to build credit history and reach consumers.
    • It is expected to digitise the entire value chain, promote inclusion of suppliers, derive efficiencies in logistics, and enhance value for consumers.
    • ONDC protocols would standardize operations like cataloguing, inventory management, order management, and order fulfilment.

Source: ET

Open Network for Digital Commerce (ONDC) FAQs

Q1: What is the Open Network for Digital Commerce (ONDC)?

Ans: It is an initiative by the Department for Promotion of Industry and Internal Trade (DPIIT) to democratize digital commerce in India.

Q2: When was Open Network for Digital Commerce (ONDC) launched?

Ans: In April 2022.

Q3: What is the primary aim of Open Network for Digital Commerce (ONDC)?

Ans: To promote open networks for the exchange of goods and services over digital platforms.

Q4: How does Open Network for Digital Commerce (ONDC) differ from traditional e-commerce models?

Ans: It shifts from a platform-centric model to an open, interoperable network.

India’s GDP Growth – Strong Real Expansion Amid Nominal Slowdown and Data Transition

India’s GDP Growth

India’s GDP Growth Latest News

  • India’s first advance estimate of GDP for 2025-26, released by the Ministry of Statistics and Programme Implementation (MoSPI), projects a sharp rise in real GDP growth to 7.4%.
  • This is driven mainly by a rebound in manufacturing and resilient services, despite external shocks such as 50% US tariffs on Indian goods. 
  • However, nominal GDP growth is projected to slow to 8%, a five-year low, raising fiscal and budgetary implications ahead of the Union Budget 2026-27.

Key Highlights of the First Advance Estimate

  • Real vs nominal GDP growth:
    • Real GDP growth (2025-26) - 7.4% (up from 6.5% in 2024-25).
    • Nominal GDP growth - 8% (lowest in five years, excluding pandemic year).
    • Gap between real and nominal growth - 60 basis points, lowest since 2011-12.
    • This indicates low inflationary pressures or weak price growth.
  • Size of the Indian economy:
    • Nominal GDP (2025-26) - ₹357 lakh crore.
    • At an exchange rate of ₹89.89/$, GDP equals $3.97 trillion, just short of the $4-trillion economy milestone.
    • Significance: India nearing $4 trillion economy despite global volatility.
  • Sector-wise performance (supply side / GVA):
    • Manufacturing: Growth rebounds to 7% (from 4.5% last year). Despite US tariffs, domestic demand and supply-side resilience remain strong.
    • Agriculture: Growth moderates to 3.1% (from 4.6%). This reflects normalisation after a strong previous year.
    • Construction: Growth at 7% (down from 9.4%) - still robust due to infrastructure push.
    • Services: Strong expansion at 9.1% driven by new-age services, GST rate cuts (in September), and robust services exports.
  • Expenditure-side trends (demand side):
    • Private Final Consumption Expenditure (PFCE): Growth at 7% in 2025-26 as against 7.2% in 2024-25.
    • Gross Fixed Capital Formation (Investment): It is expected to rise 7.8%, up from 7.1% growth seen last year.
    • Government Consumption Expenditure: It makes up less than a tenth of India’s GDP, and is expected to see its growth rate more than double to 5.2% this year from 2.3% in 2024-25. This is led mainly by State government spending.
  • Second-half slowdown:
    • The first advance estimate implies that GDP growth in October-December 2025 and January-March 2026 will average 6.9%, sharply down from the 7.8% and 8.2% growth rates recorded in the first two quarters.
    • The Reserve Bank of India (RBI), which raised its GDP growth forecast for the year by 50 bps last month to 7.3%, expects the economy to grow by 7% in October-December 2025 and 6.5% in January-March 2026.

Implications for Union Budget 2026-27

  • The first advance estimate of GDP for the year is used by the Ministry of Finance for its Budget calculations. 
  • The Role of nominal GDP: Nominal GDP growth is a critical input for tax revenue projections, fiscal deficit targets, and debt-to-GDP ratio. Slower nominal growth may constrain fiscal space, and affect revenue buoyancy.
  • Example:
    • Budget 2025-26 assumed 10.1% nominal GDP growth to fix the fiscal deficit at 4.4% of GDP.
    • Actual nominal growth (8%) fell short, but the absolute GDP target was met due to revisions.

Major Structural Change - New GDP Series

  • Shift in base year:
    • This first advance estimate will have a short shelf life because GDP data released February 27 onward will be as per a new series with a base year of 2022-23 as against 2011-12 now. 
    • Updating the base year is key to a correct picture of the economy.
  • Shift includes: New data sources, improved methodologies, and updated benchmarks.
  • Importance: Reflects structural transformation of the Indian economy.
  • Caution by MoSPI: Estimates will undergo frequent revisions, users must interpret data carefully.
  • GDP revisions timeline: The GDP growth figure for 2025-26 will continue to undergo revisions after the second advance estimate is published on February 27, with the final number available only in February 2028.

Challenges Highlighted and Way Ahead

  • Slowing nominal GDP growth: This indicates fiscal management challenges. Maintain fiscal prudence amid lower nominal growth.
  • Second-half economic slowdown: Sustain manufacturing momentum through PLI and export diversification. Strengthen investment cycle via public capex and crowding-in private investment.
  • Agricultural growth moderation: Boost agricultural productivity to stabilise rural demand.
  • External uncertainties (tariffs, global volatility): Continue structural reforms to support medium-term growth (6.5–7%).
  • Frequent data revisions may affect policy consistency: Leverage data reforms for evidence-based policymaking.

Conclusion

  • The first advance estimate for 2025-26 underscores the resilience of the Indian economy, with robust real GDP growth of 7.4% despite global headwinds. 
  • However, the sharp deceleration in nominal GDP growth raises concerns for fiscal planning and revenue mobilisation. 
  • As India transitions to a new GDP series with an updated base year, policymakers must balance growth support, fiscal discipline, and reform momentum to navigate uncertainties in 2026-27 and beyond.

Source: IE

India’s GDP Growth

Q1: How does the divergence between real and nominal GDP growth in 2025-26 impact fiscal management in India?

Ans: A lower nominal GDP growth constrains tax buoyancy and limits fiscal space for deficit and debt management.

Q2: What is the significance of the manufacturing sector rebound in India’s GDP growth for 2025-26?

Ans: The rebound reflects domestic demand resilience and supply-side strength despite external shocks like US tariffs.

Q3: Why is nominal GDP growth a crucial assumption in the Union Budget formulation?

Ans: It determines tax revenue projections and fiscal deficit targets as a percentage of GDP.

Q4: What is the rationale behind revising India’s GDP base year from 2011-12 to 2022-23?

Ans: To reflect structural changes in the economy through updated data sources and improved methodologies.

Q5: What explains the expected second-half slowdown in India’s GDP growth during 2025-26?

Ans: Moderation in consumption and investment growth amid global uncertainties and domestic base effects.

Why Silver Soared 160% in 2025: Key Drivers Behind the Silver Price Rally

Why Silver Soared 160% in 2025

Why Silver Soared 160% in 2025 Latest News

  • Despite a sharp 10% one-day fall in late December, silver quickly rebounded, ending December with gains of over 30% and posting a remarkable rise of more than 160% in 2025.
  • Like gold, silver benefited from global trade tensions and interest-rate easing by the US Federal Reserve. 
  • However, its rally was also driven by distinct factors beyond safe-haven demand, setting it apart from gold’s more traditional ascent.

Why Silver’s Rally Is Different from Gold’s

  • Unlike gold, which is mainly valued as a store of wealth, silver benefits from diverse sources of demand. 
  • Its unique physical properties make it essential for industrial uses such as batteries, solar panels, and electronics—sectors critical to future technologies. 
  • Alongside this, silver also has strong demand in jewellery and coins. 
  • This wide mix of industrial, investment, and ornamental uses makes silver’s buyer base broader and its price dynamics more powerful than gold’s.

Supply Constraints and Geopolitics Fuel Silver’s Rally

  • Byproduct Supply and Demand Mismatch - Silver is largely produced as a byproduct of mining other metals. Its supply has failed to keep pace with rising industrial demand, tightening the market over several years.
  • US Adds Silver to Critical Minerals List - In November 2025, the United States added silver to its critical minerals list, updated by the US Geological Survey. This influences government financing and potential tariff reviews under Section 232.
  • Tariff Fears Drive Stockpiling - Even before the listing, fears of tariffs led to heavy stockpiling. Data from CME Group showed US silver inventories surged to 531 million ounces in September, far above normal levels.
  • China’s Export Curbs Add Pressure - New rare metals export restrictions by China, effective for two years, have heightened concerns, as silver is included in the controls.
  • Industry Alarm Over Supply Risks - The restrictions have worried manufacturers reliant on silver. Elon Musk, CEO of Tesla, warned that silver is essential for many industrial processes, underscoring supply-chain anxieties.

Fear of Missing Out Fuels Silver’s Price Spiral

  • Physical Shortages Trigger Price Spikes - Heavy US stockpiling created supply mismatches in global hubs like London, where benchmark prices are set. Shortages of physical silver by October pushed prices sharply higher.
  • Retail Momentum Joins the Rally - The Bank for International Settlements noted that trend-chasing retail investors sought to ride gold’s momentum in 2025, pulling silver into speculative buying as well.
  • India’s ETF Inflows Amplify Demand - Indian investments surged, with Association of Mutual Funds in India reporting ₹5,342 crore inflows into silver ETFs in September—far exceeding gold ETF inflows—intensifying demand for physical silver.
  • Self-Reinforcing Price Cycle - Creation of new ETF units required buying physical silver, tightening supply further. Rising prices fueled FOMO buying, which in turn pushed prices even higher.
  • Cooling Inflows, Persistent Tightness - ETF inflows eased in October and November, but supply constraints kept markets tight, sustaining silver’s elevated price levels.

Broader Commodities Rally in 2025

  • Metals Beyond Gold and Silver - The commodity surge in 2025 extended beyond precious metals. Copper crossed the $12,000-per-tonne mark for the first time, driven by US tariff fears and supply shortages similar to those affecting silver.
  • Weak Dollar and the ‘Debasement Trade’ - A weakening US dollar—down about 10% in 2025—pushed investors towards the “debasement trade”, favouring gold, silver, industrial metals, and even bitcoin as hedges against currency erosion.
  • Supportive Macro Conditions - Easing monetary policy, fiscal concerns, geopolitical risks, and declining confidence in US assets sustained demand for real assets, reinforcing the upward momentum across commodities.
  • Outlook with Volatility Risks - ANZ expects the bullish case for gold and silver to remain intact into the first half of 2026, though analysts caution that high volatility is likely after the sharp price run-up.

Source: IE

Why Silver Soared 160% in 2025 FAQs

Q1: Why silver soared 160% in 2025 despite volatility?

Ans: Why silver soared 160% in 2025 lies in industrial demand, supply shortages, tariff fears, ETF inflows, and silver’s role as both metal and investment.

Q2: How did supply constraints explain why silver soared 160% in 2025?

Ans: Why silver soared 160% in 2025 is linked to silver’s byproduct mining nature, inadequate supply growth, US stockpiling, and China’s export restrictions.

Q3: What role did ETFs play in why silver soared 160% in 2025?

Ans: Why silver soared 160% in 2025 was amplified by massive inflows into silver ETFs, forcing funds to buy physical silver and intensifying shortages.

Q4: How did global geopolitics affect why silver soared 160% in 2025?

Ans: Why silver soared 160% in 2025 includes US tariffs, critical minerals classification, China’s rare metals curbs, and geopolitical uncertainty boosting demand.

Q5: Will factors behind why silver soared 160% in 2025 continue?

Ans: Why silver soared 160% in 2025 may still support prices in 2026, though analysts warn of high volatility after the sharp commodity rally.

Madras HC Thiruparankundram Ruling: Why Security Concerns Were Rejected

Thiruparankundram Ruling

Thiruparankundram Ruling Latest News

  • The Madras High Court resolved the dispute over lighting the Karthigai Deepam lamp at Thiruparankundram hill by permitting the ritual to proceed, while barring public participation.
  • The Division Bench dismissed the Tamil Nadu government’s claims of potential communal unrest as unfounded, calling them an “imaginary” apprehension.

Background of the Thiruparankundram Dispute

  • Thiruparankundram Hill rises about 1,050 ft on the outskirts of Madurai. 
  • At its base stands the ancient Arulmigu Subramanian Swamy Cave Temple, long associated with Hindu worship. 
  • Over centuries, Jain rock beds and caves were also carved on the hill.

Sufi Dargah at the Summit

  • The summit houses the burial site of the Sufi saint Sikkandar Badhusha, around which a dargah later developed. 
  • These overlapping histories gave the hill multiple identities, including “Samanar Hill” for its Jain links and “Sikkandar Hill” after the saint.
  • Because of its shared religious significance, the hill often requires police deployment during festivals, when access and movement become contentious.

Early Legal Settlement (1920–1923)

  • A civil suit filed in 1920 by the temple Devasthanam claimed ownership of the entire hill. 
  • In 1923, the trial court ruled that: 
    • Most of the unoccupied hill and pilgrim path belonged to the temple; 
    • The topmost peak, the area around the mosque, Nellithope, and the steps leading to it were Muslim property—an arrangement that underpins later disputes.

Earlier Disputes at Thiruparankundram

  • Recurring Litigation Over Ritual Practices - Legal disputes over Thiruparankundram have persisted for decades, reflecting sensitivities around ritual practices and shared access to the hill.
  • Flagstaff and Animal Sacrifice Controversies - In 2021, a dispute arose over replacing a wooden flagstaff at the dargah with an iron one. 
    • In early 2025, an attempt to perform animal sacrifice at the hilltop led to litigation; a three-judge Bench prohibited it, noting the hill’s status as a protected monument under the Archaeological Survey of India rules.
  • History of Restrictions on Lamp Lighting - Court records show that attempts to light lamps near the summit were stopped by authorities in the 19th and early 20th centuries, citing lack of established custom and public order concerns.
  • High Court Directions in the 1990s - The issue resurfaced in 1994 when volunteers sought to light the Karthigai Deepam at the peak. 
    • In 1996, the High Court directed that the Deepam be lit at the Uchipillaiyar Temple mandapam, permitting alternate locations only if they were at least 15 metres away from the dargah, the flight of steps, and the Nellithope area.
  • Present Dispute - The current case revisits this long-standing issue, focusing specifically on the lighting of a festival lamp at the hilltop under tightly regulated conditions.

Trigger for the 2025 Thiruparankundram Dispute

  • Petition to Light the Karthigai Deepam - In late November 2025, a group of worshippers approached the Madras High Court seeking permission to light the Karthigai Deepam on December 3 at a stone pillar on Thiruparankundram, locally known as the “Deepathoon.”
  • Single Judge’s Order - A Single Judge allowed the plea, treating it as restoration of a religious practice. 
    • The court directed the temple management to light the lamp with police assistance, noting that Karthigai is a festival of lights celebrated beyond temple interiors.
    • When the temple’s Executive Officer flagged law-and-order concerns, the Single Judge initiated contempt proceedings and permitted a small team to climb the hill under security cover.

State Government’s Objections

  • The State government and the Hindu Religious and Charitable Endowments Department challenged the order, arguing that disputes over custom and usage must be decided under the HR&CE Act, not via writ proceedings.
  • The State questioned whether the Deepathoon had religious significance at all, suggesting it could be a survey marker or a remnant linked to Jain usage.
  • Citing crowd control and public peace concerns, police imposed prohibitory orders. As a result, the lamp was not lit on the festival day.

Appeals Filed

  • The State, the HR&CE Department, and representatives of the dargah appealed the Single Judge’s order, bringing the matter before a Division Bench for final resolution.

What the Madras High Court Division Bench Ruled

  • Deepathoon Recognised as Ritual Structure - The Division Bench held that the structure in question was indeed a Deepathoon, noting its carved cavity suitable for oil and wicks, and rejected the State’s claim that it was merely a survey marker.
  • Rejection of Law-and-Order Fears - The court dismissed the administration’s security concerns as an “imaginary ghost,” observing that allowing a small team of temple officials to access the hill once a year was manageable. 
    • It remarked that any disturbance would arise only if “sponsored by the State itself.”
  • Restricted Performance of the Ritual - While upholding the ritual, the Bench modified the earlier order by restricting the lighting of the lamp to a limited Devasthanam team, with no public access to the hilltop.
  • Coordination and Heritage Safeguards - The District Collector was directed to coordinate the exercise, ensuring compliance with conditions set by the Archaeological Survey of India to protect the monument.

Source: IE | ToI

Thiruparankundram Ruling FAQs

Q1: What is the Madras HC Thiruparankundram ruling about?

Ans: The Madras HC Thiruparankundram ruling concerns permission to light the Karthigai Deepam at Thiruparankundram hill while rejecting the State’s law-and-order apprehensions.

Q2: Why did the Madras HC reject security fears in the Thiruparankundram ruling?

Ans: The Madras HC Thiruparankundram ruling held that security fears were imaginary and that a small, controlled ritual posed no real threat to public order.

Q3: What restrictions did the Madras HC impose in the Thiruparankundram ruling?

Ans: Under the Madras HC Thiruparankundram ruling, only a limited Devasthanam team may light the lamp, with no public access and ASI conditions enforced.

Q4: How did the Madras HC define the Deepathoon in its ruling?

Ans: The Madras HC Thiruparankundram ruling recognised the Deepathoon as a ritual lamp structure, rejecting the State’s claim that it was merely a survey marker.

Q5: Why is the Madras HC Thiruparankundram ruling significant?

Ans: The Madras HC Thiruparankundram ruling balances religious practice, heritage protection, and public order, limiting executive overreach based on speculative security fears.

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