Montana-based mountaineer Conrad Anker is no stranger to big mountain challenges. At 44, he's made first ascents in Antarctica and the Himalayas; in May 1999, he discovered the frozen body of British climber George Mallory at 27,000 feet on Everest's North Face. But the question remains: Did Mallory and partner Sandy Irvine reach the top before the mountain claimed them in 1924?
Listen to Anthony Cerretani talk to Montana-based climber, Conrad Anker, just before Anker's attempt to retrace Mallory's steps.