http://www.sciencealert.com/life-on-earth-originated-300-million-years-earlier-than-previously-thought-new-evidence-suggests Researchers have found evidence of ancient microorganisms that lived in what is now Western Australia at least 4.1 billion years ago. If confirmed, the discovery suggests that life originated on Earth 300 million years earlier than previously thought. http://www.sciencealert.com/life-on-earth-originated-300-million-years-earlier-than-previously-thought-new-evidence-suggests