Part 6/21:
He illustrates the profound global effects: massive megafauna extinctions, rapid sea level rise, and abrupt climate cooling. The impact hypothesis, strongly supported by over 60 scientists publishing in reputable journals, argues that multiple fragments from a colossal comet struck Earth, causing extensive destruction and even wiping out a presumed advanced civilization of that time. Hancock suggests this event may have erased collective memories and myths about a pre-existing, highly-developed human culture, replaced by stories passed down through generations as floods and divine wrath.