dinosaurs, for me, are still one of the most amazing creatures ever to have lived on the planet. you're touching something that was alive 65, 100, or three or more hundred million years ago. when you pick up a fossil, and you're the first ever human being to touch the remains of that organism, it's a remarkable feeling. >> dinosaurs are iconic animals. they represent paleontology in general. they represent science. dinosaurs lived for 150 million years, and they dominated the world for that long, and yet humans have only been around for three, four, or five. what are our chances? we seem to be approaching these big problems. >> most of what is to be learned about the history of life is yet to be discovered. what's still out there? what's still in the ground? what some kids might find will