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Researchers have taken the first-ever images of the Thwaites Glacier in Antarctica, a glacier about the size of Florida that is anticipated to play a key role in future sea level rise.

The images, taken by a robotic underwater vehicle, were part of a broad set of data collected in a variety of experiments by the International Thwaites Glacier Collaboration.

Already, Thwaites accounts for about four percent of global sea-level rise. Researchers have had concerns that a tipping point in the stability at its foundations could result in a run-away collapse of the glacier and boost sea levels by as much as 25 inches.  Read on.