A long, controversial investigation of a polar bear scientist has ended with his government employer saying it does not look like he engaged in any scientific misconduct.
Charles Monnett is a wildlife researcher with the Bureau of Ocean Energy Management, part of the Department of the Interior. He and a colleague, Jeffrey Gleason, wrote an influential 2006 report describing apparently drowned polar bears floating in the Arctic, which they saw during a routine aerial survey of whales.
NASA's Curiosity rover has found definitive proof that water once ran across the surface of Mars, the agency announced today. NASA scientists say new photos from the rover show rocks that were smoothed and rounded by water. The rocks are in a large canyon and nearby channels that were cut by flowing water, making up an alluvial fan.
"You had water transporting these gravels to the downslope of the fan," NASA researchers say. The gravel then formed into a conglomerate rock, which was in turn likely covered before being exposed again.