In 1972 French physicists discovered that natural nuclear fission reactors were in operation about two billion years ago in Oklo, Gabon in Africa.
Here’s a sampling of the latest speculations about the Cambrian explosion.
We instantly spot the fruits of fertile imaginations by spotting their characteristic functional coherence. Dragonflies. Smartphones. Nuclear power plants.
Somehow, without any calculation at all, we’re all certain that geological processes can’t make a wrench.