American mountain climbers Kyle Dempster and Scott Adamson earned reputations as two of the world's best by pushing limits and setting out to conquer icy, steep routes others couldn't scale.
That fearlessness and passion led them to a treacherous mountain peak in a remote part of Pakistan this summer for their second attempt at making a climb never done before.
They nearly died last year on the first try, miraculously surviving a 400-foot fall down the mountain.
This time, they did not make it off the mountain.
A search launched Aug. 28 for the missing climbers was called off Saturday by their families after helicopters found no signs of the men or their...