What is Earth Day and why do we celebrate it?

WorldEnvironment
22 Apr 2026 • 5:34 PM MYT
The Independent
The Independent

The world’s most free-thinking newspaper

What is Earth Day and why do we celebrate it?

  • Millions globally will observe Earth Day on Wednesday, an annual event aimed at inspiring environmental activism for planetary preservation.
  • The concept originated with US Senator Gaylord Nelson, who was moved by a 1969 offshore oil spill and proposed a national “teach-in” on environmental issues.
  • The inaugural Earth Day took place on 22 April 1970, strategically timed to maximise student participation.
  • The event significantly impacted US policy, leading to landmark legislation like the Clean Air Act and Clean Water Act, and is considered the genesis of the modern environmental movement.
  • Now a global phenomenon observed in over 192 countries, Earth Day has increasingly focused on climate change since 2000, with this year's campaign being “Our Power, Our Planet”.

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