**FILE** Space shuttle Columbia accident investigation board member Dr. Douglas Osheroff listens during a public hearing in Cape Canaveral, Fla. in this March 25, 2003 file photo. An independent health panel disclosed Friday, July 27, 2007, that, at least twice, astronauts were cleared to fly despite warnings from flight surgeons and other astronauts about their heavy drinking. "NASA has had a history of ignoring indications that something is wrong, and even though the odds were with NASA, they have lost," Osheroff, a Nobel Prize-winning physicist who investigated the Columbia disaster in 2003, said. (AP Photo/Peter Cosgrove, File)