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Earth day was first time celebrated on 22nd April in the year 1970, on this day, people from all corner of the globe organize events in support of environmental protection. People in northern hemisphere celebrate Earth day during spring and people of South Hemisphere celebrate in autumn. 

At present more than 192 countries celebrate Earth day each year. It was founded by US Senator Gaylord Nelson. For his contribution to environment protection, Senator Gaylord was awarded Presidential Medal of Freedom Award.

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