Frigid Polar Vortex Unlikely to Repeat This Winter http://t.co/5TAfZNkBX2 #winter #polarvortex pic.twitter.com/eMMO3CDdpY
— Scientific American (@sciam) October 18, 2014
Frigid Polar Vortex Unlikely to Repeat This Winter http://t.co/5TAfZNkBX2 #winter #polarvortex pic.twitter.com/eMMO3CDdpY
— Scientific American (@sciam) October 18, 2014