In 1970, Stanford professor Paul Ehrlich published a famous book, The Population Bomb, in which he described a disastrous future for humanity: “The battle to feed all of humanity is over. In the 1970s and 1980s hundreds of millions of people will starve to death.” That prediction turned out to be very wrong, and in this interview Nicholas Eberstadt tells how we are in fact heading toward the opposite problem: not enough people.