From The Publisher: Apr. 26, 1993

Andrea Dorfman remembers viewing Tyrannosaurus rex in New York City's American Museum of Natural History as a grade schooler, and, like millions of her peers, being "mesmerized. How could you not be captivated by those huge teeth?" she asks.

She returned to the museum hundreds of times, as an intern at Natural History magazine, as a journalist and as a happy gawker, and the exhibit never changed -- the same impressive dentition.

On her most recent visit, however, interviewing paleontologists Mark Norell and Michael Novacek for this week's cover story, the dinosaur halls were closed -- and for the very reason,...

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