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As the USA is hit with freezing temperatures, one man conducts an experiment...
It's so cold in Iowa that Tom Rauen of Dubuque managed to freeze his t-shirt in under one minute!
Covering his shirt in water, Mr Rauen places it outside and watches as it freezes stiff - before tearing it in half.
Iowa saw temperatures as low as -20 Fahrenheit on Monday, according to the Weather Underground.
In New York, residents have seen temperatures dip as low as -50.
Watch the amazing video above.