Mount Everest glaciers are under threat and melting — thanks to climbers relieving themselves (only 4.39 years left)

Urine trouble, Mount Everest. After standing the test of time for 50 million years, the world’s tallest mountain is under threat from an unlikely source: our pee. Urine deposited on glaciers is enough to melt over 150 tons of ice and snow on Mount Everest every year, according to an a-thaw-calyptic study in the Regional Environmental Change scientific journal, as reported by the Independent. “Urine, with a temperature of around 37°C (human body temperature), causes the ice to melt,” wrote the study authors, who were sent by Nepal’s Survey Department to determine the impact of humans on Everest. The international...