What's up with all the giraffe sex? Why is it easier to keep a moving bicycle upright? How does my stomach growl? Why were dinosaurs so big? What are some interesting skills to have? Hank and John Green have answers!

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If you're in need of dubious advice, email us at [email protected].

Join us for monthly livestreams at patreon.com/dearhankandjohn.

Follow us on Twitter! twitter.com/dearhankandjohn

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