Environmentally conscious beauty company Aveda has partnered with eco-fashion leader Project Alabama to unify Kirstin Dunst, Jessica Alba, Avril Lavigne, Susan Sarandon, Le Ann Rimes, Carmen Electra, Naomi Watts, and many, many others. The last time this much talent worked on one project was a surprise birthday party for Kevin Bacon, but how could any of them have said no to a fun project that raises money for the NRDC? Handbags for the Earth has the celebs autographing and decorating bags that are available for purchase on Ebay. The auction ends a week from today, so place your bid ASAP.

“Global warming isn't cool. Stopping it is.” That's the motto of a new star-studded ad campaign from ClimateStar.org, founded by Union of Concerned Scientists, designed to raise awareness on global warming. Here's Mischa Barton beckoning an audience in a white angelic dress, windswept hair and the tagline “Let's Clear The Air.” There's Kevin Bacon in a tough-guy stance beneath the declaration: “Six degrees can make a world of difference. Not Separation – temperature.”