The river of Dawkinss title is a river of DNA flowing through time from the beginning of life on earth to the present
- & onwards. Dawkins explains that DNA must be thought of as the most sophisticated information system imaginable: Life is just bytes & bytes of information he writes. Using this perspective he describes the mechanisms by which evolution has taken place gradually but inexorably over a period of three thousand million years. It is the story of how evolution happens rather than a narrative of what has actually happened in evolution. He discusses current views on the process of human evolution including the idea that we all trace back to a comparatively recent African Eve & speculates that the information explosion that was unleashed on Earth when DNA came into being has almost certainly happened in other places in the universe.