APR 21, 2015 05:57 AM PDT

A beautiful tour of our planet

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Trees keep our planet alive. For Earth Day, one initiative asked citizens to plant trees to keep our planet healthy
About the Author
  • I'm a writer living in the Boston area. My interests include cancer research, cardiology and neuroscience. I want to be part of using the Internet and social media to educate professionals and patients in a collaborative environment.
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