[contentcards url=”https://amp.theguardian.com/science/2020/jun/29/dinosaurs-wiped-out-by-asteroid-not-volcanoes-researchers-say?utm_term=Autofeed&CMP=twt_gu&utm_medium=&utm_source=Twitter&__twitter_impression=true” target=”_blank”] Study says surge in volcanic activity could not have caused Cretaceous/Paleogene extinction event Nicola Davis A 66m-year-old murder mystery has finally…