Two major winter storms are bearing down on the U.S. this week and are expected to bring some of the highest snow totals of the season for cities including Chicago and Washington, D.C.

A 1550 square km (963 sq mi.) iceberg, designated A81 broke off Antarctica’s Brunt Ice Shelf. A time-lapse of the 'calving process' was captured by satellites. Credit; ESA - European Space Agency ...