"A food scandal in Germany deepened Friday, as regional authorities shut down more than 4,700 farms after tests showed animal feed had been contaminated by a chemical that can cause cancer."

"Although many shark species are still at risk of extinction, around the world shark conservation advanced last year. In Washington on Tuesday, President Barack Obama signed into law the Shark Conservation Act of 2010, which increases protection for sharks from the practice of shark finning...."

"The presidential commission examining the causes of the BP oil spill Wednesday laid blame for the disaster on corporate mismanagement, inadequate government regulation and ultimately a lack of political will to ensure proper oversight of the oil industry as it pushed drilling rigs into ever deeper waters."

"House Republicans wasted no time Thursday in trying to block the Obama administration from acting to stem global warming." Whether they have the votes to succeed is uncertain.

"The Maryland Department of the Environment has formally threatened to sue the operator of three coal-fired power plants in the state for allegedly polluting ground and surface water with coal ash it's dumping in two unlined landfills."

"Bacteria ate nearly all the potentially climate-warming methane that spewed from BP's broken wellhead in the Gulf of Mexico last year, scientists reported on Thursday."

"Oregon is poised to adopt the strictest standard for toxic water pollution in the United States, driven by concerns about tribal members and others who eat large amounts of contaminated fish."

"RAVENA, NY -- Nearly one person in 10 tested for toxic mercury had elevated blood levels enough to warrant a visit to their doctor, according to a study of people who live around the Lafarge cement plant by the Harvard University School of Public Health."

"U.S. EPA senior policy analyst Hugh Kaufman, a kind of living legend in the world of federal whistleblowers, ... believes the [House] Oversight panel's chairman [Darrel Issa, R-CA] is turning a committee that is supposed to serve as Congress' watchdog into a panel for partisan witch hunts."

"The errors and misjudgments that led to the explosion of the Deepwater Horizon offshore oil drilling rig last spring weren't the result just of blunders by BP and its contractors, but reflect industry-wide problems that require new regulations and standards, a presidential commission has concluded."