In recent years, a theory has gained currency in paleontological circles that, basically, dinosaurs didn't really become extinct -- they just grew feathers, and a few of them learned to fly. Modern-day birds, the theory holds, are not just distant evolutionary cousins of the bad boys of the Jurassic, but their direct descendents. If the dinosaurs had landed at Plymouth Rock, then birds would make up the membership of the Mayflower Society. Or... More >>>