Frigid air from the North Pole: What's this polar vortex? - CNN International

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

Winter weather grips U.S.

HIDE CAPTION

CES 2014

Tre Mason

Sasheer Zamata

Sasheer Zamata

Evan Peters