Above all else, Resist Coal.
From mining accidents to pollution, mountain-top-removal to greenhouse gases, coal is the most environmentally damaging fossil fuel. Contrary to popular perception, there's no such thing as "clean coal." Green-conscious consumers should contact their utility companies to ask how much of their electricity generation comes from burning coal, and demand faster transition to natural gas as well as wind & solar sources. Natural gas burns cleaner and emits roughly half the amount of carbon dioxide per megwatt of electricity generated as does coal.