http://www.newsweek.com/scientists-capture-gigantic-iceberg-video-it-break-glacier-greenland-1020790

Scientists captured a colossal iceberg on video, as it broke free from a glacier in eastern Greenland in June, giving viewers around the world a visual depiction of how sea levels are rising.  

Researchers from New York University shot the video of an iceberg, nearly the size of New York City, drifting into the sea after it split from a larger body of ice. This phenomenon called calving—the breaking off of large blocks of ice from glaciers— could cause the world's oceans to swell. If glaciers continue to melt and break into the sea, a large percentage of the world’s population living in coastal cities could be threatened, the scientists said.