Villanova University Department of Geography and the Environment
http://www1.villanova.edu/villanova/artsci/geoenv.html

Lower Merion Conservancy
http://lmconservancy.org/

Guardians of the Brandywine
www.watchourwaters.org/

McMurdo Long Term Ecological Research (LTER) Program
http://www.mcmlter.org/index.html