National Geographic News, By: John Roach, 04/22/2013
More than a billion people around the world will celebrate Earth Day on April 22, 2013—the 43rd anniversary of the annual day of action on the environment. This year's theme is The Face of Climate Change, chosen to highlight the "mounting impact" of global warming on people worldwide, according to the Earth Day Network, the group founded by the first Earth Day organizers.
The Earth Day Network is asking people to become their own "climate reporters" by sending their pictures and stories of people, animals, and places threatened or affected by global warming, according to the group's website.
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