polar vortex

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Just how cold did it get during last week's polar vortex?

If you answered "Cold enough to freeze an egg," then you are correct.

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Alexandra Arciszewski / EyeEm via Getty Images

In the United States' Midwest, a massive polar vortex has plunged the temperatures into record cold. It's so bad, the high in Chicago yesterday was still in the negative double digits.

With such unbridled cold, the homeless population in these cities is in grave danger. Luckily an anonymous donor has paid for hotel rooms for some.

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