The discovery was made by an 18-member international team of researchers including James Kennett, professor of earth science at University of California Santa Barbara (UCSB).
It has been called the Big Freeze, the Last Blast of the Ice Age or -- to use the scientific name -- the Younger Dryas, and for climate experts it is one of the big mysteries of their field.
Day in Pics: 22nd December
Showbiz World - December 22, 2014
Sunny Leone with Mastizaade