Hollywood's biggest guns go green, should you?

It's no secret that one of the biggest health problems facing humanity right now is the health of the planet on which we live. Whether or not you believe in global warming (and there are plenty of folks who don't), it is hard to ignore that the Earth is not receiving the kind of treatment from its inhabitants that it rightly deserves.

Many are slow to begin making even small changes like the three R's - reducing, reusing and recycling for those not in the know. Mother Earth has got some pretty big guns on her side though, as loads of incredibly famous celebrities are making sure to do their part and also making sure that people know about it.

While the efforts of a few, or even a few hundred, celebs may not be enough to turn things around, they can certainly generate a bunch of publicity and awareness. And as we all know, what's popular among the beautiful and famous tends to become trendy across the globe pretty quick. So check out this list of stars who are doing their part to save the planet and think of what changes you can make to do yours.