Tourist activity and urine at Everest base camp accelerate glacier melt

Scientists analyzing satellite data and on-site measurements report that the temporary village that forms at Everest’s base camp contributes measurable heat to the surrounding Khumbu glacier. In the 2023 climbing season, fuel burned for cooking, heating and electricity, combined with the body heat of thousands of climbers, generated enough warmth to melt as much as 2,492 tonnes of ice. The study highlights that more than 6,000 litres of urine are produced daily, most of which is released directly onto the glacier, adding roughly 154 tonnes of melt-inducing heat.

Although the researchers stress that global climate change is the primary cause of glacier loss, they warn that unaccounted sources such as helicopter exhaust and equipment heat could increase the local impact. They recommend relocating the base camp to a stable, rocky area to reduce pressure on the glacier and improve safety for mountaineers.