Whether you donated to this year’s Coin campaign, joined our Patreon, or told a friend about Crash Course -- THANK YOU! We’re looking forward to another inspiring year of learning in our current & upcoming series: Geology, Big Questions on U.S. Government, English Language Arts & Marine Biology.

THIS IS YOUR LAST CHANCE! Crash Course only exists because folks like you have chosen to help hundreds of thousands of learners across the globe access our educational resources. Make your tax-deductible donation before 11:59 tonight: complexly.info/CCcoin26-22

We're not really playing the algorithm game. We're choosing to teach what needs to be taught. And still, Crash Course was viewed 143 million times last year! That's millions of educators, students, and lifelong learners who had access to completely free, high-quality educational resources.

🪙New this year by popular demand: the 200,000 learner coin! At 1.525" in diameter, the size of the coin reflects the impact of your donation -- BIG! There are only 20 of these bronze coins available, and they will be numbered and come with a signed thank you note!

🪙There are only 100 of our 100,000 learner coins available! These beautiful titanium coins are $5,000, numbered, and come with a signed thank you note.

🪙The brass coin is $500 and helps us reach 10,000 learners 🪙The 20,000 learner coin is $1,000, made of colored titanium, and hand stamped with unique numbers. These will come with a thank you note signed by Hank and John Green!

Each coin that people like you purchase helps us reach thousands of learners with high quality educational material. 🪙The copper coin is $100 and helps us reach 2,000 learners

❔What does my donation do? We're choosing to teach what needs to be taught, not what makes the algorithm happy. But it’s expensive to make high quality educational material. And not playing the algorithm game comes at a cost. That’s why we need you!

Starting tomorrow and only through May 29, get your 2026 Crash Course Coin and help us continue lowering barriers to education. Curious about the Crash Course Coin? Read on!

Join our email list to be the first to know about new and upcoming series, and get exclusive looks behind the scenes of Crash Course. (Plus, we might have something extra special coming up that you'll definitely want to know about...) complexly.info/ccnews

Dwayne's journey started underground millions of years ago. After a LOT of time, weathering, and erosion, Dwayne got chiseled down to the svelte rock he is now. He met Sage in a forest while she was hunting for mushrooms, and they've been friends ever since!

Meet Dwayne the pet rock! Joining our host Sage, Dwayne is Earth's emissary on Crash Course Geology, helping us understand the vastness of geologic time. Watch Dwayne's Crash Course debut when Crash Course Geology premieres April 9.

Say hello to a familiar face: Sage "The Bad Naturalist"! After her Crash Course debut as our special correspondent on Scientific Thinking, Sage is returning as the host of Crash Course Geology, premiering on April 9.

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!

Adapting books into movies can be contentious, and it's no different for Latin American Literature. In this episode Crash Course Latin American Literature, we're exploring the exchange between these two art forms, and how one piece of pop culture can help illuminate another. youtu.be/-Mewx3GjK2A

Want more Sex Ed? Our partners at the Kinsey Institute have compiled research summaries from recent studies related to the topics covered in each episode of Crash Course Sex Ed. You can find links to relevant resources in the description of each Crash Course Sex Ed video, and at complexly.info/sexed

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

Under the moniker the Bad Naturalist, Sage researches topics in earth science to share with her audience as a fellow lay-person, to demonstrate quality research and critical thinking skills all in an accessible and light-hearted style.

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.

Coming soon: Crash Course Scientific Thinking. This 7-epsiode miniseries in partnership with HHMI Biointeractive will help understand peer review, consensus, what makes sources reliable (or not), and what “correlation doesn’t equal causation” actually means. Watch the course preview 1/13!

In last year’s educator survey, we learned a ton about what our educator viewers teach and how they teach it—but a lot can change in a year! If you’re an educator, we’re interested to hear what your day-to-day classroom looks like and how we can best support you.

These books offer something different from an officially sanctioned, singular story. They give us multiple perspectives, critiques, and glimpses behind the scenes into people’s everyday lives.

How does a Crash Course video go from an idea to a fun-ified piece of writing? We're pulling back the curtain on our process with Editorial Director Meghan Modafferi & Script Editor Annie Fillenwarth. Join our livestream TODAY at 10:30 am PT on our channel: youtube.com/crashcourse

Next Monday join our team to go behind the scenes into the life cycle of a Crash Course script from a seed of an idea into a heavily-researched, edited, fact-checked & fun-ified piece of writing. Learn how to make nonfiction writing engaging, clear & story-oriented, and avoid common pitfalls.

What can a story say about Latin American history? In Gabriel García Márquez's masterpiece “Cien años de soledad” (“One Hundred Years of Solitude”), the fictional village of Macondo is stand-in for all of Latin America, creating an intimate setting to discuss a whole region’s complicated politics.

Meet the host of CC Futures of AI, Kousha Navidar. Kousha is a host, writer & producer. He has hosted national shows at WNYC/NPR, has been on-air talent at PBS, a former speechwriter for a member of President Obama's cabinet, and a division head of content at Samsung. Series preview out next week!

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.

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!

Don't worry-- you don't need to have read the books to follow along. But for those of you who enjoy expanding your TBR lists, check out our book list of selected titles we'll discuss during the series. complexly.info/latinamerica...

Crash Course Latin American Literature premieres October 30! In this 13-episode series, we’ll look at some of the most influential novels, poems, and short stories from the pre-Columbian era to the 21st century.