Global warming will melt most Andean glaciers in the next 30 years, scientists say, threatening the livelihood of millions of people who depend on them for drinking water, farming and power generation.

Small glaciers are scattered across the Andes and have for long been a crucial source of fresh water in Bolivia, Ecuador and Peru. But global warming has driven them into retreat. The glacier on Bolivia’s Chacaltaya mountain used to be the world’s highest ski resort at 18,000 feet above sea level. But the glacier is now only 10 feet thick on average, down from 49 feet in 1998, and glaciologist Edson Ramirez says it will disappear this year or next.
“This is a process that unfortunately is now irreversible,” he said, adding that industrialized nations are doing too little and too late to slash carbon dioxide emissions. “Most of these glaciers are similar to the Chacaltaya and that makes us think that those small glaciers could disappear in 20, 30 years.”



