The Jakobshavn Glacier in Greenland recently lost a chunk of ice so large that it would cover all of Manhattan by nearly 1,000 feet.

A glacier in Greenland just lost a huge chunk of ice. Maybe the biggest ever.
The Jakobshavn Glacier is said to be one of the fastest in the world and has been recorded moving around 150 feet per day in the past. And, earlier this month, it lost a nearly five square mile mass of ice in the course of seven days, according to satellite imagery.
NASA released before-and-after photos of the ice loss, which in the vernacular of iceberg studies, is referred to as "calving."