Mistakes That Worked: 40 Familiar Inventions & How They Came to Be
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From Frisbees to X-Rays, Post-It Notes to penicillin, here are the fascinating stories behind the accidental inventions of 40 things, including Coca-Cola, potato chips, Silly Putty, the Slinky, and many other familiar items. An IRA/CBC Children's Choice. ... By Charlotte Foltz Jones