Scientists find link between comet, asteroid showers and mass extinctions
Tuesday, October 20, 2015 - 20:30
in Paleontology & Archaeology
For more than 30 years, scientists have argued about a controversial hypothesis relating to periodic mass extinctions and impact craters -- caused by comet and asteroid showers -- on Earth. Now scientists have concluded that mass extinctions occurring over the past 260 million years were likely caused by comet and asteroid showers.