The Cycle Of Cosmic Catastrophes: How A Stone-a... Here

: The authors connect scientific data to global oral traditions, suggesting that ancient legends of worldwide floods and "Thunderbirds" are actually eyewitness accounts of these cosmic impacts.

: Discoveries of radioactive mammoth bones and magnetic microspherules in specific sediment layers. The Cycle of Cosmic Catastrophes: How a Stone-A...

: Some scientists argue that the evidence, such as the "black mats," can be explained by natural environmental changes rather than a comet. Others point out the lack of a clear, single impact crater from this specific timeframe. : The authors connect scientific data to global

In the book , authors Richard Firestone, Allen West, and Simon Warwick-Smith argue that a prehistoric cosmic event approximately 13,000 years ago triggered the end of the last Ice Age and caused mass extinctions. They propose that a large comet fragmented in Earth's atmosphere, leading to global fires, floods, and sudden climate shifts. Key Claims and Findings Others point out the lack of a clear,

: This catastrophe is cited as the primary cause for the sudden disappearance of North American megafauna, such as mammoths and saber-toothed tigers, as well as the collapse of the Paleo-Indian Clovis culture.

While many readers find the narrative compelling, the "Younger Dryas Impact Hypothesis" remains controversial.

: Puzzling elliptical depressions along the U.S. Atlantic coast that the authors link to the impact event.