Earth Observing System Project (educator's visual materials)
A series of extensively annotated space-based images of the earth
and sea, from NASA. Covers global climate change,
depletion, deforestation, and land use.
Effect: Understanding the Key Issue" from Penn.
State Dept. of Earth And Mineral Sciences
greenhouse gas materials
solar energy experiment
need to fix: http://ericir.sunsite.syr.edu/plweb-cgi/fastweb?getdoc+lessons+lessons+3618+2+wAAA+global%26warming
Fuels to Obtain Energy
Keeping Heat In or Out
the Energy of Sunlight
The Issue of Renewable Energy
Your Own Hydropower