www.berkeley.edu
Berkeley website contains information from Tyrone Hayes, frog researcher
www.epa.gov
environmental protection organization website contains current regulations and student activities
http://www.nationalgeographic.com/
National geographic Magazine and website Science information and activities
www.yale.edu and www.cbc.yale.edu/people/skelly
Yale university site contains science experiment results of David Skelly, frog researcher and Peabody Museum