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Leonardo Dicaprio, Brad Pitt, Hayden Panettiere

Jeff Kravitz/MTV Hope for Haiti Now via Getty Images, AP Photo/Alex Brandon; Paul Morigi/WireImage

Green Is Universal

As part of their jobs, Tinseltown folks naturally spend a whole lotta time in the land of make-believe.

But that doesn't keep them from focusing their attention on something that's also very real—like the need to take care of this great, big, beautiful planet of ours.

From Leonardo DiCaprio and Jennifer Aniston to Matt Damon and Selena Gomez, many stars are doing whatever they can when it comes to aiding the environment.

So, starting today and all throughout Earth Week, check out our special section where we'll be taking time out to recognize the famous faces who are definitely setting examples for the rest of us.

After all, being green isn't just a Hollywood thing. It's universal.