Us Mountain Lakes

Global warming is turning clear mountain lakes green in the western United States because of an increase in algae blooms "without historical precedent", researchers reported on Tuesday.

It was her dream: She would be a U.S. Fish and Wildlife Service seasonal field assistant working with the small but threatened grizzly bear population of Montana's Cabinet Mountains, a narrow stretch of snow-capped peaks that sprawl more 40 miles. Tucked within the range are glacial lakes, waterfalls and, on the southwest face, swamp creeks.

Global warming is turning clear mountain lakes green in the western United States because of an increase in algae blooms "without historical precedent", researchers reported on Tuesday.

It was her dream: She would be a U.S. Fish and Wildlife Service seasonal field assistant working with the small but threatened grizzly bear population of Montana's Cabinet Mountains, a narrow stretch of snow-capped peaks that sprawl more 40 miles. Tucked within the range are glacial lakes, waterfalls and, on the southwest face, swamp creeks.