The Encyclopedia of Earth is an online source of environmental information that features objective, authoritative articles written and reviewed by an international community of experts. Topics range from absorption of toxicants and biodiversity to wind farms and zero-point energy. Entries often include images and references.Go to: http://www.eoearth.org/

Pesticide-containing waters leave frogs more susceptible to fungal infections than pristine environments do. (p. 270)

This Web site from the U.S. National Library of Medicine offers an interactive introduction to toxic chemicals and environmental health risks that people might encounter in everyday life and in everyday places. The site includes many links to additional information and a section for teachers.Go to: http://toxtown.nlm.nih.gov/

Do you have an idea for a cutting-edge technology that could protect the environment while promoting economic growth? The U.S. Environmental Protection Agency (EPA) is offering college professors and their students an opportunity to turn ideas into reality through its P3 (People, Prosperity and the Planet) grants competition. EPA's P3 is a student design competition for sustainability that is now in its third year. Previous P3 winners have already taken their innovations to the next level—including starting successful businesses, winning additional awards, and providing environmental solu...

Scientists have discovered a correlation between droughts in India and a particular type of El Niño, the climate phenomenon marked by increased sea-surface temperatures in the tropical Pacific. (p. 190)

A study that traces antibiotic-resistance genes in the environment indicates that they are present even in treated drinking water. (p. 163)