Dear Hank & John

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!If you're in need of dubious advice, email us at hankandjohn@gmail.com.Join us for monthly livestreams and an exclusive weekly podcast at patreon.com/dearhankandjohn.Follow us on Twitter! twitter.com/dearhankandjohn