http://www.newsweek.com/antarctic-iceberg-twice-size-new-york-city-about-break-brunt-ice-shelf-1338297

An iceberg twice the size of New York City is about to break off Antarctica’s Brunt Ice Shelf, NASA has said. Aerial images show huge cracks along the frozen landscape that have been growing since October 2016—when they meet, the outer ice will snap off and float away. 

The Brunt Ice Shelf is a 400 foot-thick sheet of ice in the Weddell Sea. It is home to the British Halley Research Station, which in 2016 had to be relocated because of the huge chasm that appeared in the ice—now known as the Halloween Crack.