Calling all rock nerds! The SciShow Department of Geology shirt is back! complexly.info/4v6YE9x

Let's check out some cool rocks (and much more) together! Crash Course Geology starts next week. youtu.be/YokkwzdZX2A

Sometimes when you're sick, you think about how your grandma used to take care of you. Unless you're @hankgreen.bsky.com in which case you think about the time you hallucinated that your grandma lived in the mailbox. 📺️ :https://youtu.be/a64tcJp-FmU

Oh! We know this one! Who are @johngreensbluesky.bsky.social & @hankgreen.bsky.social?

Hey, Nerdfighters. Ask Hank Anything is up for a Webby for Best Longform Series vote.webbyawards.com/PublicVoting... @hankgreen.bsky.social @complexly.org

We are so honored to be nominated for People's Voice Webby! Vote for Ask Hank Anything: wbby.co/57402N

It ain't easy being sneezy! When you get that telltale feeling in your nose, do you look at the light? @hankgreen.bsky.com 📺️ :https://youtu.be/a64tcJp-FmU

It's World Theatre Day! Did you know that we have a whole series on Theater? Learn about the history and workings of the dramatic arts all over the world with Crash Course Theater and Drama. www.youtube.com/playlist?lis...

Our next esteemed guest is Rachel Bilson! ⁠ ⁠ Wednesday, @hankgreen.bsky.social and Rachel will talk about all the important things, like why salt and vinegar chips hurt your mouth and why hiccups are a thing that happens to us.⁠ youtube.com/complexly

Next up on Crash Course: Geology! Using the basic principles of geology as a guide, this 25-episode series will take you on a tour of Earth’s past, present & future. We’ll also introduce many sub-disciplines of geology, exploring how it makes modern life possible. Watch the series preview April 2!

Ask the universe (or the surgeon) for what you want and you just might get it! 📺️ : youtu.be/r4iwRD1X_7A with @hankgreen.bsky.social and Josh Scherer

We make hundreds of videos every year, get curious about our world, and tell stories backed up by real science that you can trust. You've always been an important part of the equation. We've always needed you, but now more than ever we need your help! complexly.org/supportscishow

We know smoking causes cancer. But the journey to that knowledge is way wilder than you think. In our last episode of Crash Course Scientific Thinking, we’ll explore what happens when scientific research clashes with public opinion, individual values, and corporate interests. youtu.be/NaMcw8_10Yg

The animals we choose to eat are very very arbitrary, but the milks we choose to drink are not. 📺️ : youtu.be/r4iwRD1X_7A with @hankgreen.bsky.social and Josh Scherer

We're gonna hold your hand when we say this... we don't care if you listen to the audiobook or read the physical book. Ask Hank Anything with Josh Scherer is out now at youtube.com/complexly

Later this week, the 2009 JV Basketball Most Improved Player Josh Scherer gets his turn putting @hankgreen.bsky.social in the hot seat. Learn more about nothingness, the audiobook vs. physical book debate, and all the ways that people say croissant at youtube.com/complexly!

If you guessed braconid wasps, you're right! Braconid wasps are parasitoids, which is a type of parasitism with a slightly different outcome. The host of a parasitoid, becomes a dual-purpose incubator and food source for its offspring. youtu.be/LmQNrI4aIzo

We don't know for sure, but humans might have the dirtiest butts. with @hankgreen.bsky.social 📺️ :https://youtu.be/RuuyCOnuBDA?si=rJWVAUZq4YHgcCJZ

It's so over for Mantzoukas' pants. Stick a fork in them, they're DONE! 📺️ :https://youtu.be/RuuyCOnuBDA?si=9GQfdxgTQf6uc3uf with @hankgreen.bsky.social

Jason Mantzoukas asked. I answered. Fan art based on the most recent episode of Ask Hank Anything from @complexly.org 👋

Destroy. Dismantle. Engulf in flames. Watch Jason Mantzoukas on Ask Hank Anything. youtu.be/RuuyCOnuBDA

I'm sure this will have zero chaotic energy. Jason will have zero bizarre questions.

Our next AHA guest went above and beyond, asking the most questions of anyone this season. @hankgreen.bsky.social blows the pants off of the one and only Jason Mantzoukas! Check out the episode tomorrow, February 25th at youtube.com/complexly.

"Brennan Lee Mulligan Asks Hank Green How to Fly - Ask Hank Anything Animated" is live! ❤️ 🔗 youtu.be/dqqT6r568rY

Introducing Nicole Sweeney, Outrider's new fellow at @complexly.org's @scishow.bsky.social. Sweeney’s appointment marks the first fellow in the Outrider New Media Accelerator, which supports digital creators across multimedia platforms. Read the full announcement 👇 outrider.org/news/nicole-...

Okay, but why does it feel like a personal attack when someone touches your phone? with @hankgreen.bsky.social and Angela Giarratana! 📺️ : youtu.be/zqOAor_Vytc?...

Science communication is totally our jam, and getting to talk about how we do what we do is always great! Thanks to everyone who sat in on our session during the #AAASmtg last week.

In the most recent episode of Ask Hank Anything, Angela Giarratana shared an amazing story of the time she pranked her mom. And now, that story has been animated by Weird Pumpkins Studios on YouTube (@artbysutherland.bsky.social)! youtu.be/eVGZd_xMoTk?...

We are living in the future right now, and it looks like robots running into each other. with @hankgreen.bsky.social and Angela Giarratana. 📺: youtu.be/zqOAor_Vytc?...

This one's for the folks who are obsessed with their pets. Give your dog an extra treat from us while you watch! youtu.be/zqOAor_Vytc

Next up on Ask Hank Anything is Angela Giarratana! If you want to know what's in store for episode two, you can expect some tears, light trolling, and at least one sonnet. Angela really is asking anything of Hank in this one. Give it a watch February 11th at youtube.com/complexly!

Gummy vitamins are absolutely candy and they can totally be bad for you, so watch out! youtu.be/1lY7Y6iJ1jk?...

Thank you for all of your thoughtful questions and kind messages since our announcement on Wednesday! We wanted to take a moment to answer a few of the most common ones and share a little more about what becoming a 501(c)(3) nonprofit means for our work. For more answers, visit Complexly.org

New College Journey interview with renown writer, philanthropist, tuberculosis hater, Vlogbrother, and newly crowned founder emeritus, @johngreensbluesky.bsky.social! But before he was all of the above, he was almost a Reverend! Find out what diverted him from that path. youtu.be/0ah7dGWwImM

IMPORTANT ANNOUNCEMENT As of January 1st 2026, John and I are **no longer** the owners of Complexly (the educational media company we started 15 years ago that makes Crash Course, Eons, SciShow, Study Hall, and a bunch of other shows.) We have been the sole owners for all that time...

Complexly is excited to share that we are now a 501c3 nonprofit, built on the idea that good information is worth it. New structure. Same mission. Bigger impact. Find out how you can support free, independent, trustworthy education at Complexly.org

Our next bizarre beast is really more of a collection of beasts that all have this one dark thing in common. Some may not surprise you, like deep sea fish, but we've seen it with butterflies and birds as well! Can you guess this beast, or it's bizarre feature?

Our Executive Producer, Meghan Modafferi, recently talked to @hankgreen.bsky.social about how Crash Course is made and how science works. Along the way they discussed the world of information, pseudoscience, and why we've never done a Crash Course on math. youtu.be/DpGU8NARX-s

New SciShow Deep Dive premieres in 25 minutes at www.youtube.com/scishow

The first guest on Ask Hank Anything is @brennanleemulligan.bsky.social. In classic Brennan fashion, there will be snacks, bird facts, and good old-fashioned friendship in this episode. If you’re curious how long you could live eating only candy, you should tune in Jan 28th at youtube.com/complexly

Science is our attempt to become less wrong over time. And in honor of Crash Course Scientific Thinking, we put it on a shirt! Get yours at complexly.info/ccsci

First stop on our Field Trip tour is Dr. Feng Zhang's lab at the Broad Institute. You may already be familiar with Dr. Zhang’s work if you’ve ever heard of CRISPR… but how do you follow up a hit like that? That’s a story big enough to tell in person. youtu.be/_UimlaolxiA?...

What is science? And why do we need it? In this episode of Crash Course Scientific Thinking with host @hankgreen.bsky.social, we explore how cognitive bias shapes the way we think about the world, and how scientific thinking can help us overcome it. youtu.be/d2r7Bk1NlgU

🚨New College Journey featuring @hankgreen.bsky.social!🚨 What do you major in to become a YouTuber/best-selling author/comedian/vertical video sensation/science communicator/comedian/entrepreneur? Biochemistry, of course! Check out his interview with Joss Fong here: youtu.be/ixmyj_GMlCE

This season of Ask Hank Anything will be one for the books! Subscribe at youtube.com/complexly and watch the first episode on January 28th! P.S. Complexly Newsletter subscribers are going to find out who the first guest is next week! Are you signed up? complexly.info/askhankemails

We're hiring a producer! Crash Course producers use strong communication & leadership skills to generate a unique look and feel for various Crash Course series. They should be adept at troubleshooting common production-related obstacles as they arise. Learn more at complexly.com/jobs. Apply by 1/21.

Hank Green will be lending his passion for science to the Crash Course screen as host of Crash Course Scientific Thinking. @hankgreen.bsky.social will be joined by special correspondent Sage "The Bad Naturalist" to help us understand foundational principles of scientific thought youtu.be/Y45KrixWRNg

We have a 2026 challenge for you: Try a college course and complete 1 assignment. Step 1: Join a Study Hall online course for $25. Try it for up to 10 days and if you decide its not for you, get a full refund! Or... CHALLENGE yourself to complete the course! If you fail, NOTHING happens.

Watch as @hankgreen.bsky.social and AHA Season 2 guest Mythical Chef Josh eat their way through 100 years of food innovation! youtu.be/HGiYMH8AUwU

A second season of Ask Hank Anything is coming soon! www.youtube.com/watch?v=eG54...