Ajit Pai @AjitPai
What caused “Cambrian explosion” in animal diversity 541 million years ago? New research suggests rapid pulses/collapses of oxygenation in oceans, with fluctuations corresponding with life’s expansion/complexity & extinction. @QuantaMagazine’s @evolambert: https://t.co/6Zq6dioC87 — PolitiTweet.org