Renowned paleontologist Jack Horner has spent his career trying to reconstruct a dinosaur. He's found fossils with extraordinarily well-preserved blood vessels and soft tissues, but never intact DNA. So, in a new approach, he's taking living descendants of the dinosaur (chickens) and genetically engineering them to reactivate ancestral traits — including teeth, tails, and even hands — to make a "Chickenosaurus".
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http://www.ted.com/talks/jack_horner_building_a_dinosaur_from_a_chicken.html?utm_source=newsletter_weekly_2011-06-07&utm_campaign=newsletter_weekly&utm_medium=email