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?

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

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