Scientists Finally Figured Out Why This River Flows Uphill

In 1869, an explorer found himself in a Utah canyon that, as far as he knew, shouldn't have existed. The Green River he was traveling down had cut through the Uinta Mountains, and he couldn't explain why. In 2026, scientists seem to have finally solved the mystery: a giant blob of rock about 200 kilometers below the Earth's surface. Hosted by: Savannah Geary (they/them) ---------- Support us for $8/month on Patreon and keep SciShow going! https://www.patreon.com/scishow Or support us directly: https://complexly.com/support Join our SciShow email list to get the latest news and highlights: https://mailchi.mp/scishow/email ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Shaji John, Timos Gies, Jon Coffman, Anita, Anne Herrington, Ashley Moquin, yeyette, David Johnston, Cye Stoner, Jp Lynch, Bethany Matthews, Chris Curry, J.V. Rosenbalm, Blood Doctor Kelly, Toyas Dhake, Reed Spilmann, Eric Jensen, Garrett Galloway, Lyndsay Brown, Jeremy Mattern, Chris Mackey, Matt Curls, Friso, Jaap Westera, Jason A Saslow, Adam Brainard, Chris Peters, Piya Shedden, Kevin Knupp, Joseph Ruf, Jacob Puthoff, Kevin Bealer, Steve Gums, Alex Hackman ---------- Looking for SciShow elsewhere on the internet? SciShow Tangents Podcast: https://scishow-tangents.simplecast.com/ TikTok: https://www.tiktok.com/@scishow Instagram: http://instagram.com/thescishow Facebook: http://www.facebook.com/scishow Bluesky: https://bsky.app/profile/scishow.bsky.social #SciShow #science #education #learning #complexly ---------- Sources: https://docs.google.com/document/d/e/2PACX-1vTdAWJJIvc1TGEojrhP9I0yTubZenZjhk9G0skg-IsgNdMQVrWq-SFxTZldfohlwuy5RCDLk2k-1xJW/pub