Earth Day is an annual event celebrated worldwide on April 22nd to support environmental protection. It was first celebrated in 1970 and is now coordinated globally in over 193 countries. On Earth Day 2016, the landmark Paris Agreement on climate change was scheduled to be signed by the US, China, and over 120 other countries. The signing would fulfill requirements for the agreement to take effect. Earth Day was founded by US Senator Gaylord Nelson as an environmental teach-in on April 22, 1970, and now involves events in over 141 nations coordinated by the Earth Day Network to raise awareness of environmental issues.
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