Why Did the Earth Totally Freeze for 100 Million Years?

This documentary explores why Earth may have frozen almost entirely for tens of millions of years, an episode often called Snowball Earth. It follows the geological clues, from tillite rocks to banded iron formations, that reveal a planet locked in ice. It turns deep-time science into a clear and gripping story. It is a fascinating watch for anyone curious about the extremes our planet has survived. Free to watch in HD on Dr Documentary.

Courtesy of Documentary on YouTube. Watch on YouTube ↗

More Science & Tech Documentaries

Richard Dawkins: The Greatest Show on Earth2010•1h 1m•HD•★8.8The Strange World of Nanoscience2012•17m•HD•★8.7Through the Wormhole2012•45m•HD•★8.6Rule from the Shadows: The Psychology of Power2014•37m•HD•★8.5Journey to the Center of the Earth (It Took 8 Days, I Lost 10kg)2024•36m•HD•★7.9WYOMING: On the Roof of a Supervolcano | 4K Travel Documentary2025•57m•4K•★7.8Perfectly preserved dinosaur fossil looks like it was alive yesterday | The Nature of Things2020•44m•HD•★7.8How nanoparticles are quietly revolutionising the world | with Ivan Parkin2026•1h 0m•HD•★7.7The End of Oil, Explained | FULL EPISODE | Vox + Netflix2021•23m•HD•★7.7Afterlife | The Science Behind Near Death Experiences | Spiritual2024•1h 0m•HD•★7.7Structural Marvels: How Humanity Has Pushed Technology In 6 Hours2024•6h 39m•HD•★7.7This Is What All Life Is Made Of: The Cell2024•26m•4K•★8.3