;fill-opacity:1'/%3e%3cpath%20fill='%23000'%20fill-rule='evenodd'%20d='M7.249%203.2c.469%200%20.85.38.85.85v3.893l1.873%201.874a.849.849%200%201%201-1.2%201.2L6.896%209.145A1.7%201.7%200%200%201%206.4%207.943V4.049c0-.469.38-.85.849-.85'%20clip-rule='evenodd'%20style='fill:%23000;fill-opacity:1'/%3e%3c/svg%3e)
;fill-opacity:1'/%3e%3c/svg%3e)
The deadly cold sweeping across the United States is the result of a weakened polar vortex, a circulation of Arctic air near the North Pole.
What Caused the Deadly Cold Sweeping in the U.S?
Loading comments...
The deadly cold sweeping across the United States is the result of a weakened polar vortex, a circulation of Arctic air near the North Pole.
;fill-opacity:1'/%3e%3cpath%20fill='%23fff'%20d='M30.21%2019.84A15.2%2015.2%200%200%200%2038.334%2028H30.21zM58.095%2028H49.97a15.2%2015.2%200%200%200%208.125-8.16zM38.335%200a15.2%2015.2%200%200%200-8.126%208.158V0zm19.76%208.158A15.2%2015.2%200%200%200%2049.97%200h8.125z'%20style='fill:%23fff;fill-opacity:1'/%3e%3c/svg%3e){kind=small}
