When Mary Anderson traveled to New York, she noticed that traffic jammed as drivers stopped to wipe their windshields in snowy weather. Learn how her Stuff of Genius made roads safer -- and windshields cleaner -- in this episode of The Stuff of Genius. http://howstuffworks.com http://www.facebook.com/StuffofGenius http://itunes.apple.com/us/podcast/the-stuff-of-genius/
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