National Geographic: When you think of physics, what comes to mind? Atomic energy? Gravitational waves? Maybe Newtonian equations? Adrian Bejan thinks of those things too. But the iconoclastic energy scientista mechanical engineering professor at Duke University and one of the worlds foremost experts on thermodynamicsthinks of pretty much everything else as well. The same principles of physics, he argues, can be applied to all things that move, morph, and flow, from sports and technology to air currents and population...