Other
Camp Silos: Introduction to Farming Today and Tomorrow
Student-friendly site explaining the history of farming. The section on farming today and tomorrow gives viewers the opportunity to see pigs being born. Requires QuickTime plug-in.
Other
Union of Concerned Scientists: Science for a Healthy Planet and Safer World
The official website for Union of Concerned Scientists provides information on environmental issues and suggestions on actions people can take to curb environmental harm.