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Shots of huge icebergs in the Disko Bay, including one with an ice cave. Ice bergs in the Disko Bay outside of Ilulissat. Also shot of boat motoring by icebergs. Greenland, icebergs in the Disko Bay near Ilulissat under the Midnight Sun. Taken from a boat. Sea birds fly through one shot. Greenland, icebergs in the Disko Bay near the town of Ilulissat. Illuminated by the midnight sun. One shot has an ice cave in the iceberg. Greenland, Iceberg shots taken from a boat (in the foreground in 3 shots), in the Disko Bay near Ilulissat, under the midnight sun. On his team’s 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. Greenland, shots taken while flying in a helicopter from the Ilulissat Airport out over the Greenland ice sheet to the remote field camp of researcher Sarah Das. 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.) The Jakobshavn Isbræ is among the fastest-moving glaciers in the world. The Jakobshavn is an outlet glacier, one of the few places where the giant Greenland ice sheet can shed ice in the form of gigantic icebergs. This timelapse video (60x real-time speed) from glaciologist Mark Fahnestock shows one of these massive calving events. Notice the dark blue ice that surfaces when the iceberg flips over in the ice-choked Ilulissat icefjord. In this zany competition teachers have ten minutes to create a science activity from a special secret ingredient. This week: dental hygiene products!