Add Yahoo as a preferred source to see more of our stories on Google. 9. On Earth Day in 2011, people planted 28 million trees in Afghanistan as part of a "Plant Trees Not Bombs" campaign. 10. Since ...
Add Yahoo as a preferred source to see more of our stories on Google. For over 50 years, Earth Day has been celebrated on April 22, a day when people around the world come together to think about the ...
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