jack horner is looking.crews are now wearing surgical gloves, unheard of in the world of paleontology where no one used to worry about getting skin cells, sweat, even an occasional spilled beer on fossils. jack is skeptical that the full dinosaur dna sequence will ever be found, but that hasn't stopped him. he's come up with a whole new idea for his dream of making a dinosaur. > horner: the best way is just to use a modern dinosaur-- the chicken. because evolution works, birds are actually carrying ancestral dna. >> stahl: horner has written a book proposing a plan to mine that ancestral dna as a way to reverse-engineer a chicken into what he calls a dino-chicken. it may seem improbable that this is carrying dna from something like this. but when you think about it, birds, like the dinosaurs they evolved from, still walk on hind legs, most have three toes pointing forward with one in the back, and they even all have wishbones. as for dinosaur features you don't see in modern chickens, like long tails, horner