Thwaites Glacier in West Antarctica has retreated in the past at rates twice as fast as satellites have measured over the past decade, according to research published this week in the journal Nature Geoscience. The research, based on maps of the seafloor created by an autonomous submarine, suggests that the "speed limit" for melting at Thwaites is faster than scientists thought. And that pulses or rapid retreat may be in store as the glacier lifts off of seafloor high points. The World's Environment Correspondent Carolyn Beeler speaks with host Carol Hills.
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