Every year or two, the Northern Hemisphere gets treated to a bout of intensely cold temperatures thanks to the polar...

Every year or two, the Northern Hemisphere gets treated to a bout of intensely cold temperatures thanks to the polar vortex. What you may not realize, though, is that it’s not the polar vortex that causes this cold weather – it’s the vortex breaking down.…
http://myfusimotors.com/2019/01/23/polar-vortices/