American Institute of Biological Sciences
Action Bioscience: The Dose Makes the Poison or Does It?
In an interest to protect humans and the environment a question arises: how does one determine the toxicity level in various substances? Two sides of the argument are presented with support in this article. One side says all substances...
Other
Zero Waste America: Landfills
Lists landfill issues such as leakage, water contamination, air emissions, and hazardous waste dumping. Gives extensive documentation site links.
US Geological Survey
Mercury in the Geochemical Cycle
Mercury in the geochemical cycle ultimately affects the food chain. Learn about this and its effect on the Everglades.
National Institutes of Health
Nih & Niehs: Chemicals, Chemicals, Everywhere
An activity for students to recognize that everything is made up of chemicals. Students will learn that chemicals are produced both naturally and synthetically. Students will also study the work of toxicologist as they ride along with a...