Since 1945 this “Great Acceleration” has permitted the tripling of the human population and the crowding-out of the rest of the planet’s biosphere. Lewis and Maslin tell us: “Populations of fish, amphibians, reptiles, birds and mammals have declined by an average of 58 percent over the last forty years… On land, if you weighed all the large mammals on the planet today, just 3 percent of that mass is living in the wild. The rest is made up of human flesh, some 30 percent of the total, with domesticated animals that feed us contributing the remaining 67 percent.”