How fast to you have to be to follow the sunset? How fast are mosquitos? Why does the solar system spin? Should a three-headed dog have three names? How does soap work? Why do car speedometers go so high? Why do YouTube thumbnails change sometimes? Hank Green 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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