Ego: The Fall of the Twin Towers and the Rise of an Enlightened Humanity by Peter Baumann and Michael W. Taft is the first book to explore the positive evolutionary potential hidden in one of the most destructive events in history. In their examination of the evolutionary implications of 9/11 and its aftermath, the authors contend we are not falling into the grip of a new dark age at all; rather, we are on the verge of a much brighter one as the Darwinian process of natural selection continues to advance humankind.