In the 1970s, it was (or it seemed) popular to be fearful of the future. The Cold War, the environment (and its related population bomb concerns), crime, drugs, the poor, stagflation, and more. One such group helping to sow that fear was the Club of Rome through their book The Limits to Growth. Futurist and physicist Herman Kahn believes they are wrong. Now, almost 50 years later, who was right?