"After 60 years of car-worship, Americans in virtually every state are driving less, according to a new report from the U.S. Public Interest Research Group. Over the past eight years, the number of vehicle miles traveled has steadily decreased, a trend dominated by the so-called millennial generation’s much lower driving rates."

"There's a heated debate over the use of antibiotics in farm animals. Critics say farmers overuse these drugs; farmers say they don't. It's hard to resolve the argument, in part because no one knows exactly how farmers use antibiotics."

"Air pollution causes about 200,000 early deaths each year in the United States, according to a new study from the Massachusetts Institute of Technology (MIT)."

"DILLINGHAM, Alaska — President Barack Obama’s top environmental official was visibly moved as people in this fishing town told her the giant Pebble Mine would kill wild salmon and destroy their culture."

"The White House is expected to fill the EPA slot left vacant by Gina McCarthy's promotion by naming Janet McCabe, a deputy who will be tasked with navigating the legal hurdles that lie ahead."

"NEW ORLEANS -- Flying over southeast Louisiana, it's easy to see human fingerprints on what's left of the wetlands below."

"Researchers in the key corn-growing state of Illinois are finding significant damage from rootworms in farm fields planted in a rotation with a genetically modified corn that is supposed to protect the crop from the pests, according to a new report."

"In and around Texas’ vast oil and gas fields, the hydraulic fracturing boom is putting a strain on water supplies already reeling under one of the worst droughts in the state’s history."

"DES MOINES, Iowa -- Environmental and animal welfare groups sued the U.S. Environmental Protection Agency on Wednesday, alleging the federal agency unlawfully scrapped a rule that would have authorized it to collect information from large-scale livestock confinement farms."

"Loons have enjoyed unprecedented population growth over the last 30 years. They outlived DDT and a time when people used to shoot loons for sport."

"Company said the plant is no longer economically viable."

"The largest wildfire in the United States continued its destructive march through the Sierra Nevada on Tuesday, pushing further into Yosemite National Park and for the first time burning nearly to the edge of Hetch Hetchy Reservoir, the linchpin of the water supply for 2.6 million Bay Area residents from San Francisco to Silicon Valley."

"One of the firefighting teams trying to contain the Rim Fire in and around Yosemite National Park is the Geronimo Hotshots team from San Carlos, Ariz., one of seven elite Native American firefighting crews in the U.S."

"A measles-like virus that suppresses the immune system could be the reason an extraordinary number of bottlenose dolphins have died after becoming stranded along the U.S. East Coast, a panel of dolphin experts said on Tuesday."

"An Oakland watchdog group has sued four companies and plans to sue dozens more for allegedly manufacturing or selling shampoos, soaps and other care products without attaching labels warning consumers that they contained high levels of a carcinogen."