Hidden Volcanoes Melt Antarctic Glaciers from Below

Volcanoes under the ice in Antarctica appear to contribute to the melting glaciers above.

June 9, 2014
4:40 PM EDT
The edge of the Thwaites glacier, shown here in an image taken during Operation Icebridge, a NASA-led study of Antarctic and Greenland glaciers. The blue along the glacier front is dense, compressed ice. | Credit: NASA photograph by Jim Yungel