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Home / Series / 99% Invisible / Aired Order / Season 2022 / Episode 484

Dear Hank and John and Roman

So why don't we have mouth Roombas? Is the universe full of chickens? what scientific advances are happening? What was the first Internet purchase? How do I convince my parents to let me check a bag? What is Twitter? What's the difference between a telescope and a camera? Are sea monkeys natural? Hank Green and Roman Mars have answers!

English
  • Originally Aired March 29, 2022
  • Runtime 1 minutes
  • Created April 7, 2022 by
    sdrisc14
  • Modified April 7, 2022 by
    sdrisc14