Ancient ‘Asgard’ microbe may have used oxygen long before it was plentiful on Earth, offering new clue to origins of complex life Live ScienceOxygen metabolism in descendants of the archaeal-eukaryotic ancestor NatureHow Microbes Got Their Crawl The New York TimesA Major Conundrum In The Origin Of Complex Life Has Just Been Solved IFLScienceDeep-Sea Microbes Reveal How Complex Life Began SciTechDaily