At least 21 people have died in one of the worst cold snaps to hit the US Midwest in decades. Ninety million people – a third of the US – have seen temperatures of -17C (0F) or below. Some 250 million Americans overall have experienced the “polar vortex” conditions. Hospitals have been treating patients reporting […]

At least eight people have died in the US Midwest as the region shivers in the grip of its worst cold snap in decades. An Iowa student found dead outside a college building is among victims of the deadly freeze. Hospitals have been treating patients reporting frostbite as life across a swathe of the nation […]