Chemicals

Atrazine, one of the most commonly used pesticides on crops ranging from corn to trees, may not be as dangerous to humans as previously thought.

In 2000, 753 trains carrying hazardous substances had an accident and 35 released some of those hazardous substances to the environment.

Acid mine drainage from abandoned coal mines is the biggest water-quality problem in the Appalachian states.

While a few of the country's nearly 40,000 dry cleaners are opting for alternatives to the solvent perchloroethylene, most are not.

The Bush administration seems poised to accept the testing of potentially toxic pesticides on human subjects -- a practice that has raised ethical concerns.

Automotive technicians can suffer long-lasting nerve damage after occupational exposures to n-Hexane.

Incoming EPA administrator Lisa Jackson faces an immediate test on perchlorate secrecy, as the U.S. District Court for the District of Columbia rejects EPA's argument for FOIA exemption. Will EPA and the Justice Department appeal, even though Obama urges agency openness?

In spite of one of its own scientists co-authoring a 2005 study finding toxic mercury in high fructose corn syrup, the Food and Drug Administration gave a green light to the corn industry's campaign advertising corn syrup as "natural."

Following the Sept. 11, 2001, attacks on the World Trade Center and the Pentagon, many experts have become more concerned that terrorists may maliciously spread biological agents such as anthrax or smallpox.

U.S. chemical plants are vulnerable to acts of terrorism.