"The Louisville Water Co. has sharply lowered the levels of hexavelent chromium, a suspected carcinogen, in drinking water after solving a puzzle about the source of the pollutant."

"The Department of Homeland Security (DHS) has misled Congress about the effectiveness of a nearly five-year-old program that is meant to secure the nation’s chemical facilities against potential terrorist attacks, says Sen. Susan M. Collins (R-Maine).

"ALBANY, N.Y. — While health and environmental groups are praising the Environmental Protection Agency for reining in mercury emissions from power plants, a New York group says discarded thermostats remain a major source of mercury contamination in the state."

"In light of just-passed federal legislation, a chemical industry group is asking the Environmental Protection Agency to change course on its assessment of the most potent form of dioxin, a pollutant that causes cancer and is linked to reproductive problems. Such a move by the agency could drag out completion of the assessment, which has been underway for 20 years."

"Humans are having an effect on Earth's ecosystems but it's not just the depletion of resources and the warming of the planet we are causing. Now you can add an over-abundance of nitrogen as another "footprint" humans are leaving behind. The only question is how large of an impact will be felt. In a Perspectives piece in the current issue of Science, Arizona State University researcher James Elser outlines some recent findings on the increasing abundance of available nitrogen on Earth."

"Owners of thousands of U.S. homes tainted with foul-smelling Chinese drywall agreed to a legal settlement on Thursday with a German manufacturer."

"The Environmental Protection Agency is expected Friday to approve a tough new rule to limit emissions of mercury, arsenic and other toxic substances from the country's power plants, according to people with knowledge of the new standard."

"Some media reported that a new analysis of environmental links to breast cancer tells women to stop worrying about consumer products. But these stories ignore the report’s explanation that definitive evidence is not attainable and lack of human evidence of harm doesn’t mean something is safe.The real news is that for the first time, an authoritative medical group stated that scientific evidence plausibly links pollutants and industrial chemicals with biological activity that suggests breast cancer risk."

"Honeywell and fertilizer maker J.R. Simplot have agreed to build the first commercial facility for Sulf-N 26, a granular fertilizer that is comparable to ammonium nitrate but would be ineffective as a bomb material. Ammonium nitrate combined with fuel oil was used in the bomb that destroyed the Alfred P. Murrah Federal Building in Oklahoma City in 1995."