Ancient Warnings We Should’ve Taken Seriously

00:00 The Wendigo 00:59 The Roman Empire's Lead Pipes 02:05 The Bronze Age Collapse Warnings 03:09 Thucydides' Warning About Democracy 04:13 The Greenland Vikings 05:10 The Real Mayan Apocalypse 06:18 The Göbekli Tepe Carvings 07:21 Indigenous Australian Fire Warnings 08:19 The Tomb of the First Emperor's Curse 09:23 The Fishermen's Warning Stones of Japan