"At a hatchery on the Klamath River, biologists are using genetic techniques to reduce inbreeding, though some argue natural methods are more effective."

"The gloomier outlook for U.S. coal companies is raising questions about who will pay to clean up shuttered strip mines and open pits across coal country. With financial woes piling up for coal producers, environmental groups are warning that taxpayers could be on the hook for millions in restoration costs if mining companies can’t pick up the bill."

"The El Nino phenomenon currently affecting weather is expected to weaken during the Northern Hemisphere spring and transition to normal conditions by late spring or early summer, a U.S. government weather forecaster said on Thursday."

"The Fish and Wildlife Service is barring the door against 201 species of salamanders, making it illegal to import them or move them across state lines, the agency announced on Tuesday. Scientists hope the ban will help prevent a devastating outbreak from driving native salamander species extinct."

The U.S. Fish and Wildlife Service finalized new regulations on Thursday to protect the beleaguered northern long-eared bat — but some environmentalists say the government should be doing more.

"Hurricane Alex blasted into the record books on Thursday as the first Atlantic hurricane to form during the month of January in more than three-quarters of a century, U.S. weather forecasters said."

"Yosemite National Park officials, looking to avoid a costly trademark fight with DNC Parks & Resorts at Yosemite, announced Thursday that they would change the names of iconic lodges in the park. The Ahwahnee Hotel, for instance, would be known going forward as the Majestic Yosemite Hotel."