National (U.S.)

"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)."

"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."

"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."

"Federal authorities are struggling to explain why 600 people in 22 states have fallen ill from a foodborne parasite rarely seen in the United States. But some officials are ready to finger one culprit that has hindered their investigation: the sequester."

"Abnormally dry conditions and pockets of moderate drought have spread over parts of the U.S. Midwest in the past week, including in the key crop state of Iowa, according to a report issued on Thursday."

"WASHINGTON, DC -- Environmental advocates delivered a report on the climate effects of the Keystone XL tar sands pipeline to President Barack Obama today, with the intention of giving the President all the information he needs to reject the pipeline."

"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."

"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."

"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."

"Beaver Valley nuclear power plant may have failed part of an April federal safety drill in which mock intruders attack the plant, federal regulators and the plant owners said on Monday."