On his teamís first day out in the field near Kangerlussuaq, geomorphologist Paul Bierman of the University of Vermont explains what kind of rocks they look for to help determine the last time Greenland was free of ice.
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.)
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