"The Obama administration opened an aggressive new legal front in the enduring trade fight over lucrative softwood lumber exports, accusing Canada of violating a 2006 deal by allowing British Columbia to sell vast quantities of cut-rate, Crown-owned timber to lumber companies."

Darrell Issa, the incoming GOP chair of the House Oversight Committee, has vowed to investigate Democratic wrongdoing. First, though, he may have to put to rest questions about his own past.

"Mining companies can proceed with their challenge to U.S. EPA's new policies on mountaintop-removal coal mining, a federal judge has ruled in a preliminary decision that says EPA may have exceeded its legal authority."

"President Barack Obama said on Tuesday he would order a government-wide review of regulations with the goal of eliminating those that hurt job creation and make the U.S. economy less competitive."

"Higher ocean levels force Ventura officials to move facilities inland, an action that is expected to recur along the coast as the ocean rises over the next century."

"Images and data on climate, earthquakes and much more is now available in a new mobile application that offers users simplified access to libraries that until now were tapped mainly by earth and environmental scientists."

"For the first time, antimatter has been observed occurring naturally on Earth, as scientists using NASA's Fermi Gamma-ray Space Telescope have documented beams of antimatter produced above thunderstorms."
 

"People who spend their evenings in relatively bright light run the risk of stressing their bodies by ratcheting down the production of melatonin. Produced in the brain's pineal gland, this hormone plays a pivotal role in setting the body's biological clock – and, potentially, in limiting the development of certain cancers."

"More than 30 years after Congress set a goal of clearing the pollution-caused haze that obscures scenic vistas at some of America's wildest and most famous natural places, progress is still slow in coming."