The transport and transformation of substances in the environment are known collectively as biogeochemical cycles. These global cycles involve the circulation of elements and nutrients that sustain both the biological...

The Environmental Protection Agency (EPA) has tracked the national trend in greenhouse gas emissions and removals since 1990. This website provides access to the reports they have created since then, and the reports...

This site by the University Corporation for Atmospheric Research (UCAR) provides an overview of the earth's atmospheric "greenhouse effect." Diagrams and one short video help present the key ideas. Two related activities...

This instructional guide is designed to provide instructors with lecture materials and resources that examine the relationship between wetlands and global climate change. Student objectives, a general lecture outline...