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There's more to baking soda than unclogging drains and fluffing up cakes and muffins. (Mmm, cakes and muffins.) Strange but true: More than 100 tons of the popular refrigerator deodorizer were used to clean the Statue of Liberty's inner copper walls during its 1986 restoration, primarily because of baking soda's ability to attack grease by turning it into, well, soap.
Some of the white powder's more-unexpected applications: exfoliating your skin, fighting fires, cleaning up grease spills, and curing nasty bouts of indigestion. ::Real Simple
Difficulty level: Easy
See also: ::62 Uses for Vinegar