"In April, the U.S. Centers for Disease Control and Prevention raised to 535,000 its estimate of the number of American children with potentially dangerous levels of lead in their blood."

"California billionaire Thomas Steyer is taking his fight against climate change to Virginia, helping to buy TV ads criticizing Republican gubernatorial candidate Ken Cuccinelli."

"NEW YORK -- All of the notices U.S. regulators received to vouch for the safety of common food additives between 1997 and 2012 were submitted by people who had a vested interest in the outcome of those assessments, according to a study published in JAMA Internal Medicine on Wednesday."

"BP Plc said Monday it has discovered new evidence of fraud and conflicts of interest in the program that is paying billions of dollars to businesses and residents who claimed they were harmed by the 2010 Gulf of Mexico oil spill."

"Last week's much-touted White House meeting between Obama administration environmental leaders and West Virginia Democrats on coal was part of what advocates are calling an increasing dialogue between both sides of the contentious debate."

"The 2010 Gulf of Mexico oil spill focused attention on the hazards of drilling for oil a mile below the surface of the sea, but recent incidents have brought new attention to dangers that still lurk on the shallow continental shelf, where companies rely on decades-old pipes and platforms to tap aging fields."

"In the past several years, a number of polls have documented the huge gap between liberals and conservatives when it comes to their acceptance of the science of climate change. Naturally, then, researchers have increasingly turned their attention to trying to explain this dramatic divide over what is factually true. And it wasn't long before they homed in on the role of conservative media in particular -- thus, a number of studies show that watching Fox News increases your risk of holding incorrect beliefs about the science of climate change."

"U.S. EPA has backed down from an ambitious target for cellulosic biofuel production, releasing a final rule today that requires refiners to blend 6 million gallons into the nation's supply of gasoline this year."

"State legislatures are pushing to stifle farm investigations, and some news associations are fighting back."

"As an extended drought bakes the West, nowhere are ravages of changes in the climate worse than in New Mexico."