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.

While petrochemical plants get the most attention, statistics from the Chemical Safety Board suggest that media overlook three quite common and widespread hazards: chlorine, ammonia, and propane

Various nations have developed and produced chemical weapons -- substances whose main use is to harm people -- such as nerve gas or mustard gas.

The House Science Committee is investigating charges that a White House political arm with no scientific expertise is suppressing EPA information about the toxic risks of commercial products.

Paul Wotzka, a hydrologist with the Minnesota Pollution Control Agency, who was fired shortly after he asked permission to testify before the Minnesota legislature on Atrazine pollution of water finally had his say.