Footage from inside a glacier moulin, reveals a new system of tunnels.
Footage of the calving of a mega-berg from the Store glacier.
Dr Helen Czerski explains why icebergs are white.
Dr Helen Czerski discusses the important properties of the sediment contained in icebergs.
Dr Helen Czerski explains how icebergs float and what makes them so dangerous.
Dr Gabrielle Walker explores the Jostedalsbreen glacier in Norway and explains the different colours of glacier ice.
Dr Gabrielle Walker explores the Jostedalsbreen glacier in Norway and explains how glaciers move.
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