Running T. Rex

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How many people have wondered, 'Could I outrun a Tyrannosaurus rex if I had to?' Well, ok, maybe not that many people. But lots of scientists wonder how fast the biggest (and possibly the hungriest) of all land creatures could move. NPR's David Kestenbaum reports on computer models that apply the biophysics of bone, muscle and mass to answer this intriguing question.



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