"The chief of the Army Corps of Engineers on Tuesday approved a $2.9 billion plan to restore wetlands destroyed by construction of the Mississippi River-Gulf Outlet. But the corps continues to demand that

"ANCHORAGE, Alaska — The group aiming to develop a giant copper and gold mine in the Bristol Bay area is vetting the scientific studies that underlay its work, turning to a Colorado-based non-profit with expertise in environmental conflict resolution. But critics of the proposed Pebble mine are having little of it."

"Pregnant women exposed to higher levels of the chemical bisphenol A gave birth to baby boys with lower thyroid hormones, according to a new study published today."

"CHARLESTON, W.Va. -- State regulators in West Virginia have ordered Argus Energy to repair a water treatment system at a Lincoln County mine site after a blackwater spill killed fish."

"An analysis of Greenland ice core samples indicates significant global methane emissions per capita during the Roman Empire and China's Han Dynasty — much greater than had been known."

"It's lights out for the standard 100-watt incandescent light bulb after new national energy-efficiency laws took effect Monday."

"ST. LOUIS -- Doris Spates was a baby when her father died inexplicably in 1955. She has watched four siblings die of cancer, and she survived cervical cancer. After learning that the Army conducted secret chemical testing in her impoverished St. Louis neighborhood at the height of the Cold War, she wonders if her own government is to blame."

"A standoff between environmentalists in trees and workers clearing the way for a Texas portion of the Keystone XL pipeline has led crews to move around the protesters."

"It is the issue most notable by its absence in the 2012 presidential race. But the environment may yet have an impact this election as campaign groups target the vulnerable congressional seats of Republicans who dismiss the dangers of climate change."