A really big crack in an Antarctic ice shelf just got bigger

Right now, a big chunk of Antarctic ice is hanging on by a frozen thread.
British researchers monitoring the crack in the Larsen C ice shelf say that only about 12 miles now connect the chunk of ice to the rest of the continent.
“After a few months of steady, incremental advance since the last event, the rift grew suddenly by a further 18 km (11 miles) during the second half of December 2016,” wrote Adrian Luckman in a statement Thursday by the MIDAS Project, which is monitoring chan