What is World Earth Day?

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World Earth Day is celebrated across the world on April 22 every year.

About World Earth Day:

  • It is an annual event celebrated on April 22 to raise awareness about environmental issues and promote global efforts to protect the Earth's natural resources.
  • History:
    • The first World Earth Day was held on April 22, 1970, in the United States.
    • It was organized by a group of environmental activists led by US Senator Gaylord Nelson, who was concerned about the negative impact of industrialization and pollution on the environment.
  • Since then, it has become a global movement that encourages individuals and communities to take action towards protecting our planet.
  • The Earth Day 2023 theme: " Invest In Our Planet", is a continuation of the 2022 theme.

What is Earth Hour?

  • It is a global grassroots movement uniting people to take action on environmental issues and protect the planet.
  • It is organized by World Wildlife Fund (WWF).
  • It was started by WWF and partners as a symbolic lights-out event in Sydney in 2007.
  • It takes place on the last Saturday of March every year.
  • “Earth Hour” encourages people to switch off all lights for an hour, from 8:30 pm to 9:30 pm local time to promote awareness of climate change challenges and energy conservation.
  • This symbolic act, known as the ‘lights off’ moment, unites people worldwide in a show of support for the planet and serves as a reminder of the environmental issues facing us.


Q1) What is Earth overshoot day?

Earth Overshoot Day marks the date when humanity’s demand for ecological resources and services in a given year exceeds what Earth can regenerate in that year. Earth Overshoot Day is hosted and calculated by Global Footprint Network, an international research organization that provides decision-makers with a menu of tools to help the human economy operate within Earth’s ecological limits.

Source: World Earth Day 2023: Wishes, images, messages to send