pollution

Article from Live Science  by Alina Bradford, Live Science Contributor   |   April 21, 2015 http://www.livescience.com/50556-earth-day-facts-history.html   Earth Day is an annual event created to celebrate the planet’s environment and raise public awareness about pollution. The day, marked on April 22, is observed worldwide with rallies, conferences, outdoor activities and service projects. Started as a grassroots …

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