324: mOON NOT COLD?

Are there more wheels or doors? Why do we have individual teeth? Are there more teeth or more legs? mOON NOT COLD? What if my colors are different? How do I use a mouse? Why do firefighters have Dalmatians? Do astronauts ever eat normal food? How does moving water cast a shadow? John Green and Hank Green have answers!

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Follow us on Twitter! twitter.com/dearhankandjohn

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