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UK sees coldest night of winter as temperatures expected to fall further
Overnight temperatures fell as low as minus 14C in Altanharra, northern Scotland, according to the Met Office.
Pueblo radon levels are among Colorado's highest. Here's how you can get a free test kit
Radon is colorless, odorless and the U.S.'s second-most common cause of lung cancer. Here's where you can get a free radon ...