Sure, these Hollywood hotties and rock stars sometimes hop fuel-guzzling charter jets and lead planet-killing concert tours, but their hearts are in the right place. Here are some leaders of the celebrity green movement.
Musician Sting has been a rock star on the green stage for more than two decades. He founded the Rainforest Foundation in 1989. He's shown here with rocker Gwen Stefani, an eco-fashion advocate.