Ecological Regions of North America Defines 15 ecological regions of North America. Click on the map and get population, surface area, and descriptions of the physical and biological settings, and human activities. The Congressional Research Service, an agency of the U.S. Library of Congress, conducts research for legislators. A non-profit organization, the National Library for the Environment, sponsors this web site which provides the full text of CRS Reports related to the environment. Locate documents with the site's index or its search engine.
Many documents contain statistics and references to relevant federal legislation and regulations.
Environmental Protection Update Online newsletter sponsored by the PA Dept. of Environmental Protection. Searchable archives back to Sept. 1995. Includes links to other parts of the Global Warming site. Sponsored by the World Resources Institute. Provides links to many online news stories on the issue of global deforestation .