Greenland Icebergs May Have Triggered 'Big Freeze'

A new study points to an armada of icebergs or meltwater from Greenland as a possible cause for the sudden climate change called the Younger Dryas, or the Big Freeze. Starting roughly 12,900 years ago, the Big Freeze halted the Northern Hemisphere's trans



via LiveScience.com http://www.livescience.com/38617-greenland-icebergs-global-cooling.html