Earth day is celebrated on 22 April every year. The first Earth Day was celebrated in 1970. A U.S. senator named Gaylord Nelson took the step of environmental activism and founded this day with the purpose of uniting people with a common goal.

• Nelson organised the first Earth Day on April 22, 1970, with the help of a graduate student from Harvard University named Denis Hayes.
• The movement has since mobilised more than a billion individuals in over 192 countries.
• The annual event is being marked on April 22 with the global theme ‘Planet vs. Plastics’. 
• In 2016 the United Nations selected April 22 as the date for the Paris Accord.