Top 10 greenest celebs

9. Sheryl Crow

Sheryl Crow has finally realized that playing on Santa Monica Boulevard isn’t fun forever (or ever) and is starting to dig deep into environmental activism. She just played the Global Green pre-Oscar party to benefit the greening of schools. She saves wild Mustangs and may or may not use one square of toilet paper per bathroom visit—T.M.I., we know. A few years back she joined forces with Reverb to do a Stop Global Warming college tour that ran strictly on bio-diesel buses and educated frat boys on the effects their keg parties have on our eco-systems. Green on, Sheryl!