"As many as 25 percent of the American farmers growing genetically engineered corn are no longer complying with federal rules intended to maintain the resistance of the crops to damage from insects, according to a report Thursday from an advocacy group."

Within weeks, Minnesota state agencies will be releasing a study on the safety of atrazine, a weedkiller widely used by corn growers. The Minnesota results will come as the U.S. EPA undertakes yet another review of its own.

"The Environmental Protection Agency will set new nationwide emission standards for makers of polyvinyl chloride, commonly known as the plastic PVC, under a settlement with environmental groups announced Thursday."

"Senate Environment and Public Works Committee Democrats quashed a three-day-long Republican boycott and passed global warming legislation today using a procedural move that could undermine support from moderate senators if the bill reaches the floor."

"Environmentalists are beefing up efforts to increase regulation of a controversial oil and gas drilling technique as interest grows in tapping vast natural gas fields across the country."

"Leaders from the 564 federally recognized tribes will meet with Obama and numerous Cabinet secretaries at [Thursday's] White House Tribal Nations Conference. They will discuss broken treaty obligations and tribal sovereignty, along with issues of economic development and natural resources, public safety, housing, education and health."

California lawmakers ended months of negotiations with final agreement on a historic water package. The legislation now goes to Governer Schwarzenegger, and an $11.1-billion bond measure goes before the voters.