Western United States loses nearly 300 glaciers to warming

A new study reveals that the western United States has lost nearly 300 glaciers since the 1960s due to fossil fuel-driven global warming. At the mid-20th century, the region's mountain peaks hosted more than 1,450 glacial masses; today, the total surface area has been reduced by one-third.

Andrew Fountain, a geographer at Portland State University and lead researcher, noted that approximately 300 glaciers have disappeared entirely after shrinking to sizes equivalent to two football fields and losing their ability to move. The study focused on the 48 contiguous states, which are closer to human populations than the larger glaciers in Alaska.

The loss of these ice reserves threatens water supplies for agriculture, local ecosystems, and hydroelectric power generation. Researchers identified a “double blow” affecting the ice: rising summer temperatures increase melting, while winter precipitation is increasingly falling as rain rather than snow, preventing the replenishment of glacial masses.