How old is the biosphere? 3.8B years? So it has 38M left? Or 635M years, from the Ediacaran, so 6M left? https://en.wikipedia.org/wiki/Ediacaran https://en.wi

How old is the biosphere? 3.8B years? So it has 38M left? Or 635M years, from the Ediacaran, so 6M left? https://en.wikipedia.org/wiki/Ediacaran https://en.wikipedia.org/wiki/Ediacaran