This Common Substance Was Once Worth Millions

The rise and fall of a forgotten frozen empire. Sponsored by Brilliant. To learn for free on Brilliant for a full 30 days, go to https://brilliant.org/Veritasium/. Our viewers also get 20% off an annual Premium subscription, which gives you unlimited daily access to everything on Brilliant. If you’re looking for a molecular modelling kit, try Snatoms, a kit I invented where the atoms snap togethe