"CORVALLIS, Ore. -- Across the Northern Hemisphere, populations of moose, deer, and other large herbivores now far exceed their historic levels and are disrupting ecosystems, finds a new survey on the loss of large predators, particularly wolves."

"PARIS -- As the Envisat satellite marks 10 years in orbit, the European Space Agency says the instruments onboard continue to observe the rapid retreat of one of Antarctica's ice shelves due to climate change."

"Symptoms of a mysterious disease that has killed scores of seals off Alaska and infected walruses are now showing up in polar bears, the U.S. Geological Survey (USGS) said on Friday."

"Natural-gas companies are taking concerns about looming Interior Department 'fracking' regulations to the White House with efforts that include a meeting between a major producer and the Obama administration’s top regulatory official."

"Over half of 2 million frogs imported to Bay Area annually carry disease that endangers local amphibians."

"The U.S. natural gas market is bursting at the seams. So much natural gas is being produced that soon there may be nowhere left to put the country's swelling surplus. After years of explosive growth, natural gas producers are retrenching."

"Houses trembled a half mile away when a natural gas explosion rattled a compressor station near Springville, a hotbed of Marcellus Shale development in northern Pennsylvania. Just two hours after the March 29 blast, a gas safety inspector from the state Public Utility Commission was on the scene to begin an investigation into possible violations of gas safety rules. But he did not get far."

"For the past 10 years, California has struggled with huge budget deficits and wrenching cuts. Suddenly, however, the state is poised to raise billions from an unusual new source: the proceeds from its landmark global warming law."