By applying image-processing techniques to over 8,000 maps, we could estimate how much water, snow or air would be needed to "fill" each crevasse across the ice sheet. This enabled us to calculate ...

Analyzing crevasse behavior across the entire Greenland ice sheet required new approaches. “You can’t do it in person, because crevasses are dangerous. It’s hard to study by hand using ...

“There is a very big crevasse, and the Ice Doctors have been trying to find a way through for the last four or five days, without success.” Tsering Sherpa, the Icefall Doctors’ Base Camp ...

Against some unseen ridge or roll of snowdrift, the sledge halted; and now he swung 14 feet down between sheer walls of steely-blue ice, six feet apart. Slowly he spun in the crevasse, drooping ...

It was around sunset by the time he got to the lip of the crevasse. Hewitt estimated the man had been stuck on a ledge deep in the ice for more than four hours. Hewitt said he arrived to find a ...