Mingma Gyalje Sherpa knew his friends were no longer in the world as he made his way towards the two bodies buried by an avalanche. All three had climbed the world's tallest mountains. They had journeyed through mountains, sometimes under clear skies, sometimes amidst dangerous blizzards. Mingma considered Nirmal Purja and Kili Pemba Sherpa among the strongest climbers he knew.But as they were ascending Pakistan's Broad Peak this July, an avalanche swept away everything in its path.The situation was clear from the drone footage; no one was alive. But as Mingma G approached the bright down jackets gleaming in the...