The surface of Vesta — the second-largest object in the main asteroid belt between Mars and Jupiter — appears to be quite dry. But water ice may lurk underground over roughly half of the huge space rock's area, particularly near the poles, researchers said.

Obama and GOP should unite in driving the use of this abundant gas as a 'bridge fuel' to renewable energy. But they must be cautious in rushing to tap shale gas.

Some dunes on Titan – a Saturn moon seen as a chillier version of early Earth – are huge. Scientists now have suspicions about what's going on, but they don't yet know how Titan's version of sand formed. 

AP - President Barack Obama says his administration will open a large swath in the Gulf of Mexico for oil and gas exploration and development, fending off criticism that his policies have stifled domestic energy production.

AP - A CIA operative's unusual assignment inside the New York Police Department is being cut short after an internal investigation that criticized how the agency established its unprecedented collaboration with city police, The Associated Press has learned.

AP - A group holding an American hostage in Somalia moved him at least three times in the day since U.S. Navy SEALs rescued an American and a Dane and killed their nine kidnappers, pirates said Thursday. The abductors said they would kill the hostage if they are attacked.