I'm helping the environment by being a vegetarian. The meat market is extremely anti-green. From shipping countless loads of meat many miles to your household everyday to feeding the cattle and other animals grains that could easily feed many of the starving people around the word. I also buy organic fruits and vegetables at local markets. When I need to, I buy other groceries at locally owned stores. I also don't eat seafood in hopes on decreasing the overfishing of the lakes and oceans.
I know these are small steps, but I hope I am doing my part in this revolution. I also hope I am educating a few of those that didn't know the amount of environmentally harmful energies go into the meat industries.
visit goveg.com for more details on the harms of eating meat:
http://www.goveg.com/environment.asp