Polar vortex: How people are having fun in the freeze
Ninety million people have seen temperatures of -17C (0F) or below, as the US shivers in the worst cold snap in decades.
The brutal chill has brought out the creative side in some.
Ninety million people have seen temperatures of -17C (0F) or below, as the US shivers in the worst cold snap in decades.
The brutal chill has brought out the creative side in some.