Sampling sediment from the lake at the bottom of the world (IMAGE)

American Geophysical Union

Sampling sediment from the lake at the bottom of the world

Caption

The West Antarctic Ice Sheet retreated at least 250 kilometers (160 miles) inland of where the ice meets the ocean today, then re-advanced, according to new research published in AGU Advances. Scientists traced the ice’s movement using sediments from a lake more than 1 kilometer (0.6 miles) under the ice, sampled using the corer in this photo. Credit: Billy Collins

Credit

Billy Collins

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