536 may have been the worst year in history, but it wasn't the worst of all time: https://en.wikipedia.org/wiki/Population_bottleneck#Humans https://en.wikipedi

536 may have been the worst year in history, but it wasn't the worst of all time: https://en.wikipedia.org/wiki/Population_bottleneck#Humans https://en.wikipedia.org/wiki/Population_bottleneck#Humans