Polar vortex: What is it and how does it happen? Posted by : Projector King Add Comment Thursday, 31 January 2019 The deep freeze gripping much of the US has been blamed on a polar vortex. Here's what that means. from BBC News - World https://bbc.in/2Sex5LW Tags : #news of world#trending news BBC News - World#viral news#world news Share This : Projector King
