Calif regulators reject Navy offshore training

Researchers: We may have found a fabled sunstone

Poland aims to pave way for 2015 climate deal

Forest Service may let more fires burn

Recent heat spike unlike anything in 11,000 years

'God particle': Confirmation is 'achingly close'

Caffeine shot in nectar: for bee memory, not buzz

Radar reveals apparent buried channels on Mars

Scientists focus on another Sandy loss — lab mice

Curiosity sleeps as solar blast races toward Mars