Dinosaur Descendants

—- NPR's Richard Harris reports on a scientific discovery in Argentina that supports the theory that birds descended from dinosaurs. The fossil bones of a 90-million year old bird-like dinosaur were found in Patagonia last year. Although the creature didn't fly, its bone structure bears a remarkable resemblance to the earliest birds. Researcher Fernando Novas compares the four foot tall extinct animal to the ostrich.

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