From the Telegraph: "Rising temperatures have melted much of the ice on the steep trail to the summit and climbers are struggling to get traction on the exposed rock surface, according to the 49-year-old Sherpa, known only as Apa. The melting ice has also exposed deep crevasses which climbers could fall into, and experts have warned that people scaling the mountain risk being swept away by “outburst floods” from rising volumes of glacial meltwater. Apa, who grew up in the foothills to Mount Everest, reached the 29,035-foot (8,850-metre) summit on Saturday for the 20th time, breaking his own previous world record for 19 ascents. After returning to Kathmandu on Tuesday, he said: "The rising temperature on the mountains has melted much ice and snow on the trail to the summit. It is difficult for climbers to use their crampons on the rocky surfaces.” He said there was hardly any exposed rock on the trail to the summit when he first climbed Everest in 1989, but now the slopes are dotted with bare rocks. The world’s highest mountain is becoming an increasingly popular tourist destination, with a procession of novice climbers scaling the summit with the help of highly expert Sherpas like Apa."