When government scientists went looking for mercury contamination in fish in 291 streams around the nation, they found it in every fish they tested, the Interior Department said, even in isolated rural waterways.

Lawyers for New York City are trying to convince a jury in a federal trial that Exxon Mobil knew that an additive that it used in gasoline would contaminate groundwater.

Recently, Wal-Mart has been rolling out plans for what it calls a sustainability index

Ten moderate Senate Democrats from states dependent on coal and manufacturing sent a letter to President Obama on Thursday saying they would not support any climate change bill that did not protect American industries from competition from countries that did not impose similar restraints on climate-altering gases.

Florida wildlife officials are considering a ban on possessing several large, nonnative reptile species after a pet Burmese python killed a 2-year-old girl last month. Col. Julie Jones, director of law enforcement for the Florida Fish and Wildlife Conservation Commission, discussed that option with Gov.

In a victory for environmentalists, the United States Court of Appeals for the Ninth Circuit, in San Francisco, reaffirmed a lower-court decision to reinstate a Clinton-era rule that substantially limited development of roads on national forest lands.

China

Federal regulators on Friday approved a potential blockbuster diabetes drug from Bristol-Myers Squibb and AstraZeneca.

The Food and Drug Administration said it approved the drug Onglyza to reduce blood sugar levels in patients with type 2 diabetes, which affects 24 million people in the United States.

In a major step toward an overhaul of the nation

As the nation girds for a possible swine flu pandemic, one of the big weapons may come from an unexpected source