Residents of flood-prone cities such as Miami, London, and New York live with the fear of rising waters inundating their homes, transit systems, and businesses during storms. As the waters creep higher each year, people wonder: How far — and how fast — will sea level rise in the years to come? The answer, in large part, lies in the stability of the vast ice sheets in Greenland and Antarctica, including the Thwaites Glacier in Western Antarctica, the so-called Doomsday Glacier.
