" Nature’s success stories, they are like Gause’s protozoans; the world is their petri dish. Their populations grow at a terrific rate; they take over large areas, engulfing their environment as if no force opposed them. Then they hit a barrier. They drown in their own wastes. They starve from lack of food. Something figures out how to eat them. "

― Charles C. Mann , The Wizard and the Prophet: Two Remarkable Scientists and Their Dueling Visions to Shape Tomorrow's World