AOL is not the only Internet giant celebrating Earth Day. Yahoo! is as well. And while Yahoo! only has 10 ways to reduce climate change (to AOL’s 11 planet-saving tips), Yahoo!’s dress-your-avatar-in-Earth-Day-gear trumps AOL’s buddy icons. (By the way, check out the handsome virtual devil to the right.)

And all you Ask Umbra readers go make your momma proud: Yahoo! is awarding a trip to the FIFA World Cup for people who answer Earth Day questions, such as this one: Why does it matter if the seas rise and the ice caps melt? How will that affect my children and me anyhow?

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And taking advantage of their acquisition of Flickr, visitors can check out a collection of environmental photos.

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