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...

Picking up some Complexly gifts this holiday season? To give your order the best chance of arriving before December 25th, we recommend placing your order no later than today! More info about our shipping deadlines can be found at Complexly.store.

Something doesn't quite add up about the tale of Archimedes... youtu.be/A9s8qjqxI2c?...

Did Archimedes really run through the streets naked, shouting Eureka? RJ unpacks it all on The History Show tomorrow!

If you love SciShow, get a handmade shirt! It was designed by host, producer, model, and talented artist Savannah! complexly.store

For a limited time, you can get this Bizarre Beasts shirt! Our very own fashion icon, Sarah, hand-made the design featured on the front! ⁠ ⁠ Grab yours at complexly.store before Dec. 8th if you want to be the weirdest animal at your family's holiday festivities!

FIVE MINUTES (for real this time)

Join us at youtube.com/complexly in a couple hours for the premiere of a new episode of The History Show! We'll be live in the chat as we uncover the story of the "Dancing Plague of Strasbourg"

If you want to know the context behind these slides, you'll have to join us in The Learner Zone later today for a Powerpoint Party! Find out how you can join the Learner Zone at Complexly.store/learnerzone

This week, RJ takes us all the way back to 16th-century France, where a plague of dancing took over the city of Strasbourg. Watch along with the Complexly team as part of the Learn-a-thon on Friday, November 14th at youtube.com/complexly

We are counting the seconds until we get to spend some time with y'all during the 2026 Learn-a-thon! Please join us Saturday, November 15th, for a Complexly team TTRPG on the SciShow channel, and Thursday, November 20th, for a science riff off in our donor-exclusive Discord "The Learner Zone!"

Complexly is truly one of the best educational companies out there today. If you've ever watched SciShow, Crash Course, Eons, or any of their other productions, you know how valuable they are as a learning resource. Join in the fun of this year's Learn-a-thon and support free educational content!

During this year's Learn-a-thon, we have new, exclusive products available at complexlylearnathon.com! Every purchase you make supports our mission of inspiring curiosity and lowering barriers to knowledge-building. Visit complexlylearnathon.com to check out these exclusive items!

Mark your calendar for tomorrow at 4 pm MT and hop over to the livestream on the @complexly.bsky.social YouTube channel to learn how Sound Designer Callie Dishman edits and mixes the audio for Complexly podcasts and videos, featuring a sample specially recorded for the Learn-a-thon!

D&D with the complexly staff? Let's goooo!! There's a lot of useful stuff here too!

It’s time for the 2026 Complexly Learn-a-thon! We’re so excited to learn with you over the next few weeks. Make sure you check out our last post for the full schedule of events, donate to join the exclusive "Leaner Zone" donor discord, and help us show the world that good information is worth it!

The Complexly Learn-a-thon starts today, and we have three weeks full of fun events for you! For more information about the events, the Learn-a-thon-exclusive merchandise, and how you can hang out in "The Learner Zone", visit complexlylearnathon.com!

Yo ho ho pirates! The story of Zheng Yi Sao, aka the Pirate Queen, is up now at youtu.be/OsmNyKScGvg!

To celebrate the @complexly.bsky.social Learn-a-thon which starts next week, we're making our Patron-exclusive livestream open to the public! Join us at 3 pm ET / 12 noon PT on Monday 11/3 on the Dear Hank and John YouTube channel www.youtube.com/@dearhankand...

Zheng Yi Sao is probably not at the top of your mind when it comes to pirates, which is strange given that she was SO good at being a pirate... This week on The History Show, RJ tells her story.

Crash Course Futures of A.I. starts 11/19 & is a 5-episode series about AI's current trajectory, the wide-ranging impacts it is theorized to have on society, what capabilities future AI systems might have, and the governance frameworks being developed to ensure these technologies benefit humanity.

Ep. 430 "A Yawn Across Time" is now available wherever you get your podcasts! #dearhankandjohn

The forecast for next week shows a 100% chance of learning. complexlylearnathon.com

Coming soon to Crash Course Native American History: Lily Gladstone! Before she was an Oscar nominee for her role in Killers of the Flower Moon, Lily hosted Crash Course Film Production. We asked Lily to come back and guest host our episode about Native women, which comes out tomorrow!

The next Deep Dive premieres on October 17th, hosted by @tomlumperson.bsky.social!! Here's a sneak preview of the animations.

The first episode of our Endlings miniseries is out now! This has been such a huge project for us, and we couldn't have done it without our amazing audience. Check it out!! youtu.be/JbTAVnyHB88?...

JOB!

Study Hall courses offer the best low-investment, risk free way to start, re-start, or continue your college journey! Where else can you take a college course that starts on YouTube, and only pay for the credit after you've passed the course?

The secrets in the story you thought you knew about bananas are being uncovered right now at youtube.com/complexly!

Ah, bananas... cheap, full of potassium, and basically everywhere. But what happens when you peel back a little? Find out in an all-new episode of The History Show 10/3 at youtube.com/complexly.