Randall Carlson presents the geological evidence for planetary-scale floods that reshaped North America roughly 12,800 years ago — and what this means for human history. In this classroom lecture, Randall covers: - The lifecycle of comets and how they disintegrate into dangerous meteor streams - The Taurid meteor stream and its connection to the Younger Dryas impact hypothesis - The Tunguska event and what it tells us about cosmic threats we can't see coming - Geological proof of megafloods — water 400 feet deep moving 50+ mph across entire continents - The Channeled Scablands, Dry Falls, and Grand Coulee as evidence of catastrophic water flows - 18,000-ton boulders transported hundreds of miles by icebergs - Why mainstream archaeology may be missing the full picture - How drumlins could reveal impact sites on the ancient ice sheet - The connection between flood myths and real geological events