April 21st, 2008
09:11 PM ET

Earth Day 2008

Yep, it's Earth Day! Every April 22 since 1970, we've paused on this day to plant a tree, pick up trash on a riverbank, or something else to keep the planet running a little cleaner. In today's show, we saw a Duke University class that's figuring out ways clean up a polluted creek using a plan created by Mother Nature. It's pretty cool. So, what are you doing this Earth Day? If you or your class is heading out work on a project for Earth Day, don't forget your camera. Document it, and send it to us in an iReport. We may put it on CNN Student News!

Gerald Smith, CNNSN Producer

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