Yeah, the exact start of plate tectonics on Earth is very hard to pin down, but it's almost definitely after the start of life. On the other hand, even when Ea

Yeah, the exact start of plate tectonics on Earth is very hard to pin down, but it's almost definitely after the start of life. On the other hand, even when Earth didn't have plate tectonics, it probably never had a stagnant lid, which is what this article is modeling.