Polar vortex: death toll rises but weather begins to warm

Polar vortex: death toll rises but weather begins to warm:

Number of deaths unclear as Chicago breaks record for cold, with higher temperatures possible for the weekend

• What is the polar vortex?

Dangerously cold weather continued to shatter records across the midwest on Thursday, as the polar vortex kept schools, businesses and government offices closed, and hospitals busy.

Reports of deaths linked to the weather system steadily rose on Thursday and authorities continued to investigate.At least 21 have died across the country, according to Reuters. Hospitals have reported hundreds of cold-related cases.

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from The Guardian http://bit.ly/2GdDkJh
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