But she was able to spend almost an entire day hiking beneath the ice of the Alpine glacier. In her 20 years of studying icy masses, Fischer usually saw smaller tunnels near glacial rivers. Research also showed earlier this year that ice was melting faster worldwide, with scientists trying to grasp how high sea levels could rise. Her warning echoes a bleak forecast from the United Nations climate agency, which said this week that the last three mountain glaciers in eastern Africa were shrinking so fast they could vanish within two decades. The best way to limit the damage is for the world to take steps to bring down emissions and the rate of global warming, according to Fischer, a mountain researcher at the Austrian Academy of Sciences. When warmer air and meltwater come into contact with ice, cavities form in the glacier, hollowing it out from within until it collapses. ![]() ![]() Fischer and Stocker-Waldhuber inspect the entrance of a cavity in Jamtalferner glacier.
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