The glacier goes out into the Southern Ocean and loses about 50 billion tonnes of ice every year. In the last 30 years, this loss has doubled.

NASA scientists found a huge hole under the glacier in 2019. The hole is about two-thirds the size of Manhattan, and it could hasten the glacier's end.

This week, scientists mapped the ocean floor in front of Thwaites.

They found that the glacier had moved quickly in the past, and that a small push could speed up its movement again.  

This makes me worry. If Thwaites melted, the sea level would rise by about 25 inches. Its end could also throw off balance the West Antarctic Ice Sheet,

which keeps about 10 feet of sea level rise from getting into the ocean. If that much ice melted, it would be terrible.  

With each new study, we find out more about where Thwaites is weak. And every time a new study comes out,

Thwaites is back in the news, mostly because of its scary name: "The Doomsday Glacier."  

But even though this nickname has made a lot of news about what happened to Thwaites, it might do more harm than good.

"The Doomsday Glacier" was a simple but powerful title. It goes well with the story. The name stuck, though.