There is an excellent mini series from the BBC hosted by Baldrick (ex blackadder) Terry Robinson I think, called
Catastrophe. The show tracks the history of the planet from day one.
Earth was hit early on by another planet which produced the moon and gave us a spin, plus the moon was a lot closer than now, which made huge tides, which dragged minerals into the sea to create slim which made O2 from carbonmonoxide as a by product.
A super volcano under siberia collapsed and over the next 200 thousand years it changed the greenhouse gas content and the earth became a snowcone. The oceans died and that showed that there is a tipping point. Apparently in the deep ocean, there is solid methane, frozen because of the depth pressure and temp into a solid. A 5 degree terestrial shift will melt it, it releases, snowballing global warming and the earth becomes a snowball due to lack of sun almost overnight.
They estimate we have output as much dioxide in 200 years as the siberia incident did in 200 thousand years which caused the initial flip. Science reveals all.
We won't make it to 100 million years, the planet will kill us in an instant. Evolution .... the coachroaches win
