Original article: "Shocked quartz at the Younger Dryas onset (12.8 ka) supports cosmic airbursts/impacts contributing to North American megafaunal extinctions and collapse of the Clovis technocomplex" - https://journals.plos.org/plosone/article?id=10.1371/journal...
Original article: "Shocked quartz at the Younger Dryas onset (12.8 ka) supports cosmic airbursts/impacts contributing to North American megafaunal extinctions and collapse of the Clovis technocomplex" - https://journals.plos.org/plosone/article?id=10.1371/journal...