Everybody thinks that the future is going to see fights over energy, when it's far more likely to be primarily over food. Think about it: The 19th century is the century of chemistry and that gets us chemical weapons in World War I. The 20th century is the century of physics and that gets us nuclear weapons in World War II. But the 21st century? That's the century of biology, and that gets us biological weaponry and biological terror. My point: obsessing over nuclear terrorism is steering by our rearview mirror.