One afternoon in February, Al Gore was waiting to board a commercial flight from Nashville to Miami, where he was to deliver the slide show that forms the basis of “An Inconvenient Truth,” his Academy Award-winning documentary on global warming. Gore was telling me about Ilya Prigogine, a Belgian chemist who won a Nobel Prize in 1977 for his insights into the thermodynamics of open systems, an intriguing subject that has very little to do with global warming. Every minute or so he flashed a microgrin at a passer-by without interrupting his oratorical flow... --snip-- Live Earth is only the...