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Researchers wanted to know how the Antarctic ice sheet reacts to climate change. To find out, they dove into the past to learn how the ice sheet behaved during the last glaciation, when the glacier achieved its greatest extent and what factors contributed to its ultimate retreat. In order to understand the behavior of the ice sheet during the last glaciation, the researchers used 180 radiocarbon dates of algae - found buried in glacial sediments in the Transantarctic Mountains - to reconstruct the chronology of moraine formation on the headlands adjacent to western McMurdo Sound in Antarctica. [Source: University of Maine]
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