Thwaites Glacier

There is a massive glacier in Antarctica that’s roughly the size of Florida. It’s one of the Earth’s largest, and there have been predictions that warming temperatures might cause a catastrophic collapse, sheering off huge chunks of ice into the water and causing sea levels to rise nearly three feet. That’s why this particular Antarctic ice sheet is sometimes called the Doomsday Glacier. But some new analysis from University of Michigan geophysicist Jeremy Bassis offers more hopeful scenarios that suggest the glacier is not approaching complete collapse. (Segment produced by Sam Faulconer)