Posted in NEWS Asteroids aren’t completely random? Mass extinctions of Earth’s land animals follow a cycle, study finds December 11, 2020 Widespread extinctions of land-dwelling animals – which include amphibians, reptiles, mammals and birds – follow a cycle of about 27 million years. http://rssfeeds.usatoday.com/~/640124718/0/usatoday-newstopstories~Asteroids-arent-completely-random-Mass-extinctions-of-Earths-land-animals-follow-a-cycle-study-finds/