Ecology.com - this up-to-date site is packed with ecology information, news links, definitions, Earth-at-a-Glance, and feature stories focusing on ecology today.

"An Inconvenient Truth" offical website Al Gore fighting Global Warming. The science of 'An Inconvenient Truth". Trailer

Hydrogen and Nitrogen Cycle - Fact Sheet of Ohio State University Extension.

Discovery School Ecology - lesson plans for K-12 focusing on ecology.

Butterfly Sight - Curriculum topics which can be learned through the site are illustrated through a view of butterflies in the ecosystem. Good definitions and graphics here.

Kid Zone Water cycle - The basics on the water cycle grades K-4 with printables.

USGS Water cycle - Printable illustration, terms, definitions, illustration w/out labels for students.

U.S. Fish and Wildlife Endangered Species Program

http://www.invasivespeciesinfo.gov/ a gateway to Federal and State invasive species activities and programs.

EPA's Environmental Education Page - Want to learn about the environment? Want to share what you know with someone else? With fact-sheets, interactive games, and more, EPA's Web site can help you with all sorts of information about EPA and the environment. Maps of your area are found here.

Online Videos 

BBC Plantet Earth David Attenborough

NASA Connect Ocean pressure

NASA Connect Ocean Topography
NASA Connect Sun