The Earth’s history is marked by massive floods, catastrophic upheavals, and rapid environmental shifts that reshaped entire continents. In this episode of The Big Picture, Randall Carlson and Becket Fusik break down the evidence for Ice Age megafloods, lost landscapes, and the forces that shaped human civilization. Were these floods triggered by glacial meltwater, cosmic impacts, or something else entirely? The answers lie in the geological record.