In the summer of 2008, the only helicopter in Kangerlussuaq, Greenland, was effectively grounded by a diamond company, leaving scientists and logistics coordinators to frantically rearrange their field plans.
In this video interview from Greenland, geologist Tom Neumann from the University of Vermont explains how he and his colleagues are attempting to read the history of the Greenland Ice Sheet by collecting and analyzing rocks spit out from the base of the glacier.
From atop the Greenland Ice Sheet, Chris Linder, a photographer from Woods Hole Oceanographic Institution, describes observing first-hand the sudden rapid draining of a huge glacial lake.