Explore the controversial Younger Dryas Impact Hypothesis in this 22-minute video lecture. Delve into the potential causes of the Younger Dryas cooling event, megafauna extinctions, and the disappearance of the Clovis culture around 12,900 years ago. Examine evidence for and against an extraterrestrial impact, including geological markers and the search for an impact crater. Compare alternative explanations such as changes in ocean circulation and volcanic activity. Analyze the connections between climate change, human activity, and megafauna extinctions. Gain insights into ongoing scientific debates surrounding this pivotal period in Earth's recent geological and ecological history.