Bellamy Pailthorp / KPLU

Mount Rainier is famous as the most glaciated peak in  the contiguous United States. But the massive flows of ice and snow that cover the mountain are retreating rapidly, likely more rapidly than ever in the record warmth of this summer.

Participants in the 2015 "Climate Boot Camp" put on by the Northwest Climate Science Center gathered this week in Mount Rainier National Park to learn more about the dynamics behind this phenomenon. 

Walter Siegmund /

Glaciers around the world are losing mass at varying rates, according to a new report from the United Nations Environment Program. Glaciers in Patagonia are shrinking fastest, followed by Alaska, then the Pacific Northwest and Canada.

Glaciers in Asia - including the Hindi Kush in the Himalayas -- are losing ice more slowly.

Other key findings of the report include: