"Geologists in Ohio have for the first time linked earthquakes in a geologic formation deep under the Appalachians to hydraulic fracturing, leading the state to issue new permit conditions Friday in certain areas that are among the nation's strictest."

"The Missouri Department of Natural Resources should deny a construction permit for a proposed Ameren coal ash landfill in Labadie, residents said Tuesday."

"Got fleas on your cat? Ticks on your dog? In deciding on a treatment - and yes, you do want to treat these little varmints - not all chemicals are equal."

"U.S. officials ended a stand-off with hundreds of armed protesters in the Nevada desert on Saturday, calling off the government's roundup of cattle it said were illegally grazing on federal land and giving about 300 animals back to the rancher who owned them."

"BERLIN -- The cost of keeping global warming in check is "relatively modest," but only if the world acts quickly to reverse the buildup of heat-trapping gases in the atmosphere, the head of the U.N.'s expert panel on climate change said Sunday."

"Extreme weather has thinned the nation's cattle herds, roiling the beef supply chain from rancher to restaurant."

"Passage Key became one of the first national wildlife refuges in 1905, boasting 30 acres of mangroves and an inland freshwater lake. Today, it sits under the water in Tampa Bay, only emerging at low tide as a small sandbar that is popular with seabirds -- and occasional trespassing nudists."

"WHEELING - Breathing only a tiny amount of silica dust per day - enough, roughly, to cover Franklin Delano Roosevelt's nose on a dime - can put a worker at risk for myriad health problems, according to Michael Breitenstein of the National Institute for Occupational Safety and Health."

"The Obama administration released a comprehensive strategy document Wednesday aimed at reducing wildfires, which it says are being exacerbated by climate change."

"Responding to a series of fiery train derailments, federal regulators said Wednesday they will propose that trains transporting crude oil have at least two-man crews and requirements aimed at preventing parked train cars from coming loose and causing an accident like one in July that killed 47 people."