About 240 people have died attempting to climb Mount Everest. Avalanches, rockslides, blizzards, falls, altitude sickness, freezing temperatures, exhaustion and combinations thereof have all proven fatal, particularly in the so-called “death zone” above 26,000 feet. Since getting them down is grueling and dangerous, most of the corpses remain up there. They are well preserved in the snow and apparently serve as trail markers for climbers who pass by. Everest’s deadliest day occurred in May 1996, when eight people perished in a storm. Yet that incident, made famous by Jon Krakauer’s book “Into Thin Air,” did nothing to stem the tide of people willing to shell out tens of thousands of dollars for a chance to tame Earth’s highest mountain. Traffic jams have even been reported near the top, and a fistfight broke out this April between three European climbers and more than 100 Sherpas, over what the guides deemed to be rude and dangerous behavior during an attempted ascent. Meanwhile, the deaths keep coming, including at least 10 last year and around eight this year.