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Greenland, Antarctic Ice Is Melting Faster

For several summers this deeply incised melt channel transported overflow from a large melt lake to a moulin, a conduit that drains the water through many hundreds of feet to the ice sheet's bed.
For several summers this deeply incised melt channel transported overflow from a large melt lake to a moulin, a conduit that drains the water through many hundreds of feet to the ice sheet's bed.