__Earth Day__ is an annual event celebrated around the world on April 22 to demonstrate support for environmental protection. First celebrated in 1970, it now includes events coordinated globally by the Earth Day Network in more than 193 countries - wikipedia 
- https://www.earthday.org
On Earth Day 2016, the landmark Paris Agreement was signed by the United States, China, and some 120 other countries. This signing satisfied a key requirement for the Coming into force of the historic draft Paris Agreement adopted by consensus of the 195 nations present at the 2015 United Nations Climate Change Conference in Paris.
Earth Day. Annual event on 22 April
- wikimedia
In 1969 at a UNESCO Conference in San Francisco, List of peace activists John McConnell (peace activist) proposed a day to honor the Earth and the concept of peace, to first be celebrated on March 21, 1970, the first day of spring in the northern hemisphere.
This day of nature's equipoise was later sanctioned in a proclamation written by McConnell and signed by Secretary General U Thant at the United Nations. A month later a separate Earth Day was founded by United States Senator Gaylord Nelson as an environmental teach-in first held on April 22, 1970.
Nelson was later awarded the Presidential Medal of Freedom <nowiki/>award in recognition of his work. While this April 22 Earth Day was focused on the United States, an organization launched by Denis Hayes, who was the original national coordinator in 1970, took it international in 1990 and organized events in 141 nations.
Numerous communities celebrate __Earth Week__, an entire week of activities focused on the environmental issues that the world faces. In 2017, the March for Science occurred on Earth Day (April 22, 2017) and was followed by the People's Climate Mobilization (April 29, 2017).
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