"Sturgeon are disappearing from North American rivers where they thrived for millions of years. And the quest to save them is exposing the limits of the Endangered Species Act."

"In the last eight years there have been 535 mountain lions reported killed on California highways — a steady toll of one to two each week that scientists suggest may exceed the reproductive rate of increasingly isolated and inbred puma clans."

"A wave of unionization has swept the non-profit sector – but workers say they are experiencing aggressive opposition and retaliation".

"Gas stoves are coming under fresh scrutiny as a second federal agency has now stepped into the political firestorm with a proposal for new regulations for the appliances."

"A federal appeals court has sided with environmentalists, ruling that the U.S. government failed to consider the cumulative effects of greenhouse gas emissions that would result from the approval of nearly 200 drilling permits in an area surrounding Chaco Culture National Historical Park."

"Capitol Hill’s permitting reform effort got new life Wednesday as two top Senate and House lawmakers held an initial summit on reviving the overhaul bid. This time, the House could take the lead."

"The largest ever outbreak of bird flu is spilling over into mammals, including otters and foxes in the UK."

"The South is experiencing its earliest spring in 40 years of records, while spring is days to weeks early across the East Coast and Pacific Northwest".