Dear Hank & John

Is it possible to not have a temperature? Why isn't space hot? How big would a city have to be to hold everybody? How do I get my parents to ease up? Hank 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