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00:02:33
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.

00:03:01
Interview with galciologist Sarah Das (Woods Hole Oceanographic Institution) from atop the Greenland Ice Sheet.

00:02:21
Interview with glaciologist Ian Joughin (Applied Physics Lab, University of Washington) atop the Greenland Ice Sheet.

00:02:12
From atop the Greenland Ice Sheet, Kristin Poinar, a graduate student at the University of Washington, describes observing first-hand the sudden rapid draining of a huge glacial lake.

00:01:52
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.

00:03:32
From a small rubber boat on a Greenlandic lake, climate researcher Billy D'Andrea introduces some of the equipment scientists use in limnological sampling. (Limnology is the study of freshwater systems, like lakes.)

00:03:15
Climate researcher Billy D'Andrea and colleagues explore the remote "back lakes" of Greenland.

00:03:36
To understand how Earth���s climate system has changed over time, scientists need to find, develop and use natural recorders of temperature and precipitation. One natural thermometer comes in the form of alkenones: trans-fats produced by certain algae.

00:46:36
Meet glaciologist Slawek Tulaczyk and his team, who work in the fast-emerging field of ice sheet dynamics. They speak to us just after returning from a month at a remote camp on the West Antarctic Ice Sheet.

00:03:09
Dr. Tulaczyk, a glaciologist from UC Santa Cruz, studies the lakes, floods, and ice quakes that occur under the giant glaciers of Antarctica. He is among only 200 scientists world-wide who study ice sheet dynamics and its role in climate change.