LiveScience: Antarctica's floating ice collar is quickly disappearing in the west, a new study reports. In the Bellingshausen and Amundsen seas two of West Antarctica's melting hotspots some ice shelves lost 18 percent of their thickness in the past decade, researchers said. The most dramatic shrinkage occurred in the Bellingshausen Sea's Venable Ice Shelf, which lost ice at an average rate of 118 feet (36 meters) per decade in the past 18 years. At that rate, the entire ice shelf could disappear within...