April 22th every year, is a worldwide environmental protection activity. In 2009, the 63rd UN General Assembly decided to designate April 22 as "Earth Day". The event was first launched by Gaylord Nelson and Dennis Hayes in the United States in 1970, and then its influence grew. The purpose of the activity is to arouse the awareness of human beings to love the earth and protect their homes, promote the coordinated development of resource development and environmental protection, and then improve the overall environment of the earth. Since the 1990s, China has held world earth day on April 22 every year.
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