> But when it evolved on earth, it then wiped out all non-Cyanobacteria? Most, not all were either wiped out or survive only in small anaerobic niches. It wa

> But when it evolved on earth, it then wiped out all non-Cyanobacteria? Most, not all were either wiped out or survive only in small anaerobic niches. It was a mass extinction. https://en.wikipedia.org/wiki/Great_Oxidation_Event https://en.wikipedia.org/wiki/Great_Oxidation_Event