According to an Oxford University study released last July, eating a vegan diet massively reduces the damage to the environment caused by food production. By switching to a plant-based diet, you could help reduce greenhouse gas emissions, reduce land use, avoid pollution, and save water.
I've created a blog, Contra Costa Vegan, that includes a list of restaurants in Contra Costa County that have vegan items listed on their menus. Give them a try! You might be surprised at how satisfying a plant-based meal can be.