Dear Hank & John

Why are saucepans round, and how much control do authors really have over a book’s physical feel? Hank and John explore surprising animal changes with age, morning sickness in mammals, and ways to handle job rejection. They also revisit Florida, remember AFC Wimbledon commentator Mikey T, and consider what cleaner water ice could mean for life on Mars.

How can reading and writing become exciting again? Hank and John explore baby teeth, the fate of former YouTubers, and the grim reality of teleporting to Titan. They also discuss rare book signatures, mortality and the afterlife, rebuilding trust in education, AFC Wimbledon, and ambitious plans for growing food on Mars.

Sarah Urist Green, curator, art educator, and creator of The Art Assignment, joins John for delightfully dubious advice. They explore the lost art of television sign-offs, designing communal book events, writing love through emotional echoes, hosting a Hinge-date supper club, and navigating bathroom rules. Plus, tips for attending an AFC Wimbledon match and displaying signed prints.

A lively mix of tree science, creative vulnerability, and honest advice for taking a mental health day. The discussion explores how fossils distort our picture of prehistory, how to dodge book spoilers, and what wind sounds like on Mars. There’s also football news, a Mars sample-return mission, and a correction about Irish broadcaster Teresa Mannion.

John Green discusses writing with dual narrators, while Hank explores whether Earth contains more air or water. They tackle the mysteries of late thank-you cards, weather’s peculiar use of “it,” and America’s limited view of solutions abroad. Also: book-tour logistics, the hidden Nerdfighteria crest, AFC Wimbledon, and Mars telecommunications.

Why does squinting sharpen blurry vision, and do ocean waves travel far or stay local? Hank and John explore whale-powered nutrient cycles, the lack of enforceable global tuberculosis goals, caffeine in coffee soap, and whether a courthouse wedding beats an expensive celebration. Plus, AFC Wimbledon joy and Mars’s surprisingly uneven interior heat.

John and Hank Green tackle sold-out book tour woes, the science behind collagen supplements, and the dizzying question of how long a million miles really takes. They explore secular ways to read the Bible, explain why wind turbines use three blades, debate healthier social media, and ponder a possible Northern European visit.

A playful guided meditation opens the show before a tale of signing thousands more books at a warehouse. They imagine where in the solar system you could drive a moon buggy and unpack Japan’s mission to Mars’ moons. Practical tips on starting college and learning to type appear alongside sciencey takes on why toys slow with dying batteries and why alcohol makes speech drag.

They trace why we say “you’re welcome” and riff on language oddities. The brothers compare habits they’ve copied from each other and creative anxiety around book publicity. They debate whether college students should join social media without doomscrolling. Science tangents include lightning on other planets, how birds survived the asteroid, and whether a field of grass is one organism.

Sea anemone “fight club” mischief and whether to provoke attacks for a student experiment. Reassuring advice about recovering from a mean middle-school remark. Playful speculation on being reincarnated as an alien. Practical tips for supporting a first-time author and helping Sierra Leone effectively. How to pick a Premier League team and ways to keep reading with a newborn.