Paleontologist Paul Sereno is a globe-trotting, headline-making explorer. He's a University of Chicago professor who has discovered several new dinosaur species — and he's also been named to People magazine's list of the 50 most beautiful people.
Since he's an expert on the dinosaurs of the past, we're going to ask him about a big, friendly dinosaur of the present. We'll present him with three questions about Barney, the purple dinosaur.
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