The pattern always repeats itself. Civilizations rise and fall. Then new ones take their place. But, something else may be about to happen. There might be an impending collapse of our entire global civilization. Not one major civilization, but the entire global civilization, gone. Or, so that's how Stanford professor Paul Ehrlich sees it. Ehrlich, who has been called “one of the most influential ecologists of our age,” sees one thing staving off disaster. A big shift in culture first and foremost. A cultural evolution. Watch above.