2 to 10 feet of ocean Rise if Doomsday Glacier melts:

 Thwaites holds enough water to increase sea levels by more than 2 feet. But because it also acts like a cork, holding back the vast Antarctic ice sheet, its collapse could ultimately lead to around 10 feet of sea level rise, devastating coastal communities from Miami and London to Bangladesh and the Pacific Islands. 

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Scientists looked deep beneath the Doomsday Glacier. Their findings spell potential disaster for the planet