"The comet strike ushered in a 1,200-year ice age and led to the extinction of many large animals, Dr. Sweatman said. For humans, the comet probably also led to differences in lifestyle and agriculture that helped usher in the rise of civilization as we know it."
I thought the Americas' megafauna died after the ice age, not because of it?
I thought the Americas' megafauna died after the ice age, not because of it?