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!

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

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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