Carbon Rally is a great site with a great idea: banding together to reduce our carbon impact on the planet. To compete you sign up, join a team, and take challenges, eventually posting up bigger numbers on the impact you have had.Besides being a motivated bunch of green car enthusiasts, ecomodders also make their impact [...]Related posts:
Don't forget, you can accept new challenges every week. I think a lot of us here are already doing a lot of the challenges. For example, one of them is change 3 light bulbs to CFLs.