The Cycle of Cosmic Catastrophes:
Flood, Fire, and Famine
in the History of Civilization
by Richard Firestone,
Allen West, and
Simon Warwick-Smith
This is an excellent book. I was convinced by it, and remain convinced. The authors showed the debris impact radiating through the U.S. through the existence of ponds that look like a sunburst....as I recall, as far away as North Carolina.