On the edge of the ice

Thwaites Glacier in Antarctica is massive, bigger than the state of Florida. If it collapses, it could reshape every coast on this planet during this century. That’s why it’s sometimes known as “the Doomsday Glacier.”

And yet, until recently, we knew very little about it. Because Thwaites is extremely remote, reachable only by crossing the wildest ocean on the planet, scientists had never observed its calving edge firsthand. 

In 2019, a ground-breaking international mission set out to change that, and writer Elizabeth Rush was on board to document the voyage.  We caught up with her to lea...