The future of refrigeration could be magnetic

In the future, your refrigerator might keep your food cold by using a magnet. Not only would it use less power and run quieter than your current fridge, but it also wouldn’t contain any hydrofluorocarbons, gases which can add tremendously to the greenhouse effect if not properly disposed of. It all comes down to something called the magnetocaloric effect, wherein a changing magnetic field within a material causes it to get colder. It definitely holds promise, although scientists first have to figure out just how the thing works.

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