Last week, we began listening to how life began on Earth. Life began as a prokaryote, a single-celled organism to a multi-celled organisms referred to as eukaryotes. With the production of oxygen and the ozone layer, life could flourish first from the seas then later, on land. Descendants of the early eukaryotes evolved having flagellate cells which propel themselves with a whip-like organelle called a flagellum behind them. These opisthokonts gave rise to animals: animals that evolved bilaterally-symetrical organisms of which some later evolved to deuterostomes, chordates, craniates, vertebrates and jawed vertebrates. Jawed vertebrates later evolved to the teleostomes. This Sunday 15th of September 2013, we continue our journey of human evolution, Part II of Chapter 5 of The Tyranny of God: How Life Evolved On Earth.