Even as the evolution wars rage, on school boards and in courtrooms, biologists continue to accumulate empirical data supporting Darwinian theory. Two extraordinary discoveries announced this week should go a long way to providing even more of the evidence that critics of evolution say is lacking. One study produced what biblical literalists have been demanding ever since Darwin -- the iconic "missing links." If species evolve, they ask, with one segueing into another, where are the transition fossils, those man-ape or reptile-mammal creatures that evolution posits?In yesterday's issue of Nature, paleontologists unveiled an answer: well-preserved fossils of a previously unknown...