Our everyday food choices are having tremendous impact on the planet. The typical Western meat-centered diet is extremely resource- intensive and pollutes air and water. The following links are good sites to learn more on the environmental issues involved.
EarthSave.org
Environmental News Wire
Vegan Outreach

Our everyday activities, even just maintaining our  airconditioned/heated homes also contribute enormous amounts of  greenhouse gases to the atmosphere.  The good news is that there are lots of easy ways to quickly reduce our individual and communal contirbutions to global warming.   Here are a few good places to learn:

Chesapeake Climate Action Network

Local Warming

Climate Progress.org