420: The Plant Episode
Dear Hank & John20 Aug 2025

420: The Plant Episode

Does John want to be a corn or pea plant? If we were able to put enough plants on Mars, could they produce enough oxygen for us to be able to breathe? Is there a scientific definition of what constitutes a weed? How do purple leaves work? Should I tell my friend she’s been watering a fake plant for seven months? …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 at patreon.com/dearhankandjohn.



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Episoder(439)

404: Die on Tuesday

404: Die on Tuesday

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402: Alfred Australia

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401: Goodreads Therapy

401: Goodreads Therapy

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20 Nov 202440min

400: For Those Who Are Still Listening

400: For Those Who Are Still Listening

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30 Okt 202441min

399: God of Frogtok

399: God of Frogtok

Why do things happen “at” night but “during” the day? How do you heat food during a power outage? What is an organ? Does moonlight contain UV rays? What are the implications of AI song covers? What’s ...

16 Okt 202442min

398: Organic Plastic

398: Organic Plastic

When do I stop using a bar of soap? What’s the current state of the first plastics ever made?  How do you best judge peoples’ character when dating?  What’s going on with bacteria in my math problem? ...

18 Sep 202448min

397: A Top Podcast for Teens

397: A Top Podcast for Teens

Why don’t we know why gravity works? What if the Green brothers went on Dancing with the Stars?  When jaundiced, do smurfs turn green? Why am I always thirsty even though I drink lots of water? How is...

4 Sep 202447min

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