Episode Ep 484 March 30, 2022 58 min 49s

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!