National (U.S.)

"The nation's premier public health agency knowingly used flawed data to claim that high lead levels in the District [of Columbia]'s drinking water did not pose a health risk to the public, a congressional investigation has found. And, investigators determined, the agency has not publicized more thorough internal research showing that the problem harmed children across the city and continues to endanger thousands of D.C. residents."

"As BP prepares to launch its latest effort to plug the oil leak in the gulf, Interior Secretary Ken Salazar says the agency will be split into three arms to oversee leasing, safety and royalties."

"The best way to curb global warming is to put a price on climate-warming carbon dioxide emissions, according to a trio of reports from the U.S. National Academy of Sciences released on Wednesday."

"A proposal to drill for oil in the Arctic Ocean as early as this summer received initial permits from the Minerals Management Service office in Alaska at the same time federal auditors were questioning the office about its environmental review process."

A blanket of thick oil smothered Louisiana's life-giving wetlands as the BP oil spill finally moved ashore.