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Ponder, if you willWhat happens to your Social Security number when you die?Why are peanuts listed as an ingredient in plain M&Ms?Why is Barbie's hair made out of nylon, but Ken's hair is plastic?What makes up the ever-mysterious "new-car smell"?Pop-culture guru David Feldman demystifies these topics and so much more in Do Penguins Have Knees? -- the unchallenged source of answers to civilization's most perplexing questions.Part of the Imponderables® series, Do Penguins Have Knees? arms readers with the knowledge about everyday life that encyclopedias, dictionaries, and almanacs just don't have. And think about it, where else are you going to get to the bottom of how beer was kept cold in the Old West?