"British oil giant BP sued the U.S. government on Monday over its decision to bar the company from new federal contracts to supply fuel and other services following the company’s agreement to plead guilty to manslaughter and obstruction charges in connection with the 2010 Gulf of Mexico oil spill disaster."

"LYON, France -- Securities fraud, insider trading, embezzlement, money laundering and cybercrime – the intangible nature of the global carbon trading markets puts them at risk for exploitation by criminal networks, according to a new law enforcement guide produced by Interpol."

"A year ago, the Fish and Wildlife Service was poised to use a scientifically flawed range map for the American burying beetle during a preliminary assessment of the Keystone XL pipeline's effect on the endangered insect."

"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."

"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."

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

"Chevron Corp agreed to pay $2 million in fines and restitution after pleading no contest to six misdemeanor charges on Monday stemming from the August 6, 2012 explosion and fire at its San Francisco Bay refinery, according to the local district attorney."

"While environmentalists, energy executives and elected officials across North America await the State Department’s critical decision on the Keystone XL pipeline, a little-noticed trial scheduled for next month in Nebraska could spell problems for the $5.3 billion project."

"WASHINGTON -- President Barack Obama on Thursday ordered federal agencies to review safety rules at chemical facilities in response to the deadly April explosion at a Texas fertilizer plant."