Era of Excess

Book title: "The Age of Excess" Subtitle: After 80 billion people, the last person to die In 2126, it took humans one hundred years to push the earth's population to 80 billion and lock it down, eliminating the pain of death, famine and childbirth; a 128-year-old biologist who was about to die of natural causes, and a perfect engineering man who was designed to maintain homeostasis, became mirror images of each other in a war about "what is human" - in the end, humans voluntarily gave up on perfection.