"The U.S. Environmental Protection Agency has concluded that current testing of hormone-altering chemicals is adequate for detecting low-dose effects that may jeopardize health."

"Following the recent federal decision to list captive chimpanzees as an endangered species, the National Institutes of Health announced Wednesday it would retire the majority of the approximately 360 government-owned chimpanzees currently held in laboratories."

"Thunderstorms that brought significant rainfall to the northern U.S. Midwest early this week, accompanied by warm temperatures, bolstered growth prospects for recently planted corn and soybean crops, an agricultural meteorologist said on Wednesday."

"The Energy Department is moving toward abandoning a half-built factory that has cost $3.7 billion so far and was intended to make reactor fuel out of plutonium from retired nuclear bombs — part of an agreement with Russia to shrink the world’s supply of nuclear bomb fuel after the cold war."

"NEW ORLEANS — BP is placing full-page advertisements in three of the nation’s largest newspapers on Wednesday as the company mounts an aggressive campaign to challenge what could be billions of dollars in settlement payouts to businesses after its 2010 oil spill in the Gulf of Mexico."

"The Lyme-disease infection rate is growing. So is the battle over how to treat it."

"Sen. Joe Manchin (D-W.Va.) blasted President Obama's proposals to address climate change, saying new regulations on power plants would unfairly burden the coal industry."

"Yes, such a group exists. It thinks the world is flat -- but also getting warmer."

"President Obama set a high bar for approval of the controversial Keystone XL pipeline, declaring for the first time that he would let the project go forward only if it does not 'significantly increase' emissions of greenhouse gases."

"WASHINGTON -- President Obama, declaring that 'Americans across the country are already paying the price of inaction,' announced sweeping measures on Tuesday to reduce greenhouse gas pollution and prepare the nation for a future of rising temperatures."