This special feature page from the American Chemical Society (ACS) showcases the up-and-coming field of "green chemistry," that is, the development of chemical products and processes that eliminate or reduce the use and generation of hazardous substances. A list of principles behind green chemistry, a searchable bibliography of green chemistry references, green chemistry links (including...

Offered by The National Park Service Air Resources Division, this Web site includes a series of five 1-2 hour educational activities related to understanding acid rain and air quality for children grades six through eight. The very simply designed site includes lessons on: The pH scale; Understanding the difference between an acid and a base; Understanding what gases contribute to acid rain; How...