This web page is great for teaching sceince using case studies. You do need tp go through a registration process and there are a few hoops to jump through but it is worth it!

Using your zip code discover the good, bad, and ugly (environmental quality air and water) of your environment.

NCSR is a national clearinghouse for natural resource curriculum materials used by college faculty and high school science teachers. Materials cover major subject areas of environmental science and natural resources. They include fisheries, forestry, wildlife, and environmental science topics used in college programs.