Click Here to Read:  A hole opens up under Antarctic glacier — big enough to fit two-thirds of Manhattan. Scientists say if Thwaites collapses, it could trigger a catastrophic rise in global sea levels, flooding coastal cities around the world y Denise Chow on the Mach website on February 4, 2019.

The calving front of Thwaites Ice Shelf looking at the ice below the water’s surface as seen from the NASA DC-8 on Oct. 16, 2012. Note how the water acts as a blue filter.  Photo: NASA ICE / James Yungel.  Public Domain via Wikimedia Commons.