Doomsday glacier "hanging on by its fingernails" scientist says

Good news, everyone. According to Rob Larter, marine geophysicist at the British Antarctic Survey, Thwaites Glacier in West Antarctica, nicknamed the "Doomsday" glacier because of its potential catastrophic impact on global sea levels, is experiencing "rapid retreat."

"We should expect to see big changes over small timescales in the future—even from one year to the next—once the glacier retreats beyond a shallow ridge in its bed," said Larter in a press release about the study.