In this June 6, 1937, file photo, Amelia Earhart, the American airwoman who is flying round the world for fun, arrived at Port Natal, Brazil, and took off on her 2,240-mile flight across the South Atlantic to Dakar, Africa. A new documentary "Amelia Earhart: The Lost Evidence," which airs Sunday, July 9, 2017, on the History channel, proposes Earhart didn't die without a trace 80 years ago.