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Welcome Back, Polar Vortex.

Temperatures in much of the U.S. are expected to be colder than usual through at least much of next week. Mashable's science reporter Mark Kaufman explains what a polar vortex is.

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    • Meteorology
    • Science
    • Climate
    • Global Warming
    • Climate Change
Welcome Back, Polar Vortex.
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    Next week will be * very* cold

    The U.S. is about to get a potent polar vortex blast

    The U.S. is about to get a potent polar vortex blast

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    Mashable - Mark Kaufman

    In 2021 the winds have weakened, allowing frigid air to spill out of the polar regions.

    What is a polar vortex?

    These cold extremes exist within a heating world

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