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Scientists Finally Figured Out Why This River Flows Uphill
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Eons: Life and Death on Pangea
Watch the first two episodes now at PBS.org/Eons or on the free PBS app
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Complexly is a nonprofit dedicated to creating trustworthy stuff that inspires curiosity and lowers barriers to knowledge-building. Founded in 2012 by Hank and John Green, we've published more than 10,000 educational videos across channels like Crash Course, SciShow, PBS Eons, and Bizarre Beasts. Today, our work reaches millions of learners each month, grounded in our belief that trustworthy, well-crafted information should be freely accessible to everyone.
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SciShowSciShow explores the unexpected. The channel covers scientific topics in a fun, accessible way.
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Free, high-quality educational videos used by teachers, students, and learners of all kinds.
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Every month, Hank Green and Sarah Suta explore what makes an animal weird to us.
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Hank Green sits down with your favorite celebrities and answers the questions they’ve always been curious about.
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August 1, 2026Response to Discussion about AI use in Ask Hank Anything
Hello Complexly Community, You may have seen the discussion about Hank using ChatGPT for research in a “Future Hank” segment…
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July 22, 2026
SciShow awarded Carnegie Grant for Nuclear Education
Complexly awarded $600,000 Grant from The Andrew Carnegie Foundation for SciShow series on Nuclear Issues MISSOULA, MT, July 14, 2026…
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June 18, 2026
EONS: LIFE AND DEATH ON PANGEA Explores Earth’s Greatest Extinction Event
The New Six-Part Series Premieres Wednesday, July 29 on the PBS App, PBS.org, the EONS YouTube Channel and PBS Stations
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February 8, 2026
People Magazine | Hank Green Says Knowing His ‘Crash Course’ Videos Helped Millions of Students Is ’So Much Better Than Money’
The internet creator and author wants to continue helping people fuel their curiosity with his brother, John Green
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A Complexly video is never the work of just one person. It’s shaped by researchers, writers, editors, hosts, artists, and fact checkers who bring care and expertise to every step. Together, that collaboration helps cultivate curiosity and build knowledge in more people, more ways, and more places.
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