Exploring abrupt climate change induced by comets and asteroids during human history

June 8, 2020

Pro-science skeptic Dr. Marc Defant now supporting #YDIH based on Powell book
Dr. Marc Defant did a great thing this morning by announcing on Twitter and his blog that he had come around to support the Younger Dryas Impact Hypothesis. As I told Marc, my respect for his intellectual integrity soared when I saw his tweet….
 
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