Glacier-dwelling bacteria thrive on chemical energy derived from rocks and water

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https://www.popsci.com/story/environment/glacier-microbes-rocks-food-life-space/

Portage Glacier (right), Burns Glacier (center), and Shakespeare Glacier (left) in Southcentral Alaska, seen from the air. (USGS, Alaska Science Center/)

In the darkness beneath glaciers, which range in thickness from less than a quarter mile to a full mile deep (or more), microbes cannot depend on sunlight for energy. Instead,