How to Build a Dinosaur

Paleontologist Jack Horner has long been a maveric in his field. His latest ideas involve reverse-engineering a dinosaur-like critter from a chicken. Why? To get a better understanding of how evolution works. According to Horner, the chicken genome actually contains huge chunks of DNA left over from its more formidable ancestors. Through simple tweaking, an egg could be caused to hatch a saurian.