The History of Our Atmosphere

We use radiometric dating methods based on the natural radioactive decay of things like potassium and carbon to date these ancient, ancient events. And so that's one piece of evidence, is these banded iron formations. This hats a big influence, unlike our civilization, because detroit, for example, is in a location where there used to be an ocean with huge colonies of sino bacteria depositing lots of bands of iron unti like near detroit. That's why we have a car industry near detroit, because of this sino bacteria.