www.livescience.com By Becky Oskin, Senior Writer | April 25, 2014 01:50pm ET
In a reversal of this year’s extraordinary winter weather, Greenland suffered the wrath of North America’s epic heat waves in 1889 and 2012, a new study reveals.
“Last winter in the eastern United States, people associated the cold with the behavior of the polar vortex,” said lead study author William Neff, a fellow at the Cooperative Institute for Research in Environmental Sciences (CIRES) at the University of Colorado, Boulder. “In fact the polar vortex can show two faces: a cold one or a warm one depending where you are. Last winter it showed its cold face to folks in the East. In the summer of 2012 it showed its warm face.” [Video: 2 Extreme Melt Events 123 Years Apart] Click here to view the outstanding video. Click here to read more.