The widening rift in the Larsen C ice shelf in West Antarctica has reached a (relative, for ice) fever pitch in the past few months, stretching for more than 110 miles and gaping more than 1,000 feet across. In just the last couple of days, the crack grew another 11 miles and took a sharp right turn toward the sea. It now ends a mere eight miles from totally breaking through, according to observations from ice-monitoring mission Project Midas. Floating ice shelves like Larsen C hold back the flow of ice sheets and glaciers into the sea, meaning the entire West Antarctic Ice Sheet is about to get more unstable.
— source grist.org