Polar vortex: 187 million hit by big freeze
More than 187 million are effected by the coldest blast of polar air in decades gripping parts of north America. Temperatures as low as minus 38 degrees celsius have brought many cities to a halt.
More than 187 million are effected by the coldest blast of polar air in decades gripping parts of north America. Temperatures as low as minus 38 degrees celsius have brought many cities to a halt.