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Earth science

Glaciers at work

Glaciers have been powerful agents in redistributing sediment and reshaping parts of the Earth's surface. Little is known about how exactly they do it, but a new hypothesis looks set to improve matters.

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Figure 1: Three major systems of meltwater discharge from under a glacier.

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Piotrowski, J. Glaciers at work. Nature 424, 737–738 (2003). https://doi.org/10.1038/424737a

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