Home » Blogs » Gus Leonisky's blog living and dying on an evolving planetoid of an expanding universe.... But as the Earth cooled about 4.0-3.5 billion years ago, the first, and obviously most important, revolution happened: Emergence of living cells. The other major life forms, plants, fungi and archaea, were also well established by this time. Angus observes that the biosphere is a historical phenomenon involving the interaction between living matter and a formerly dead planet, such that life made more life possible. “Living matter and the rest of the planet have co-evolved, changing and being changed by each other.