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Articles on Skeletons

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Tyrannosaurus rex spanned all of ancient North America, and about 20,000 lived at once. 1Ado123/Wikimedia Commons

How many Tyrannosaurus rex walked the Earth?

Using the incredible wealth of fossil data and a modern ecological theory, researchers estimated population density for the extinct apex predator.
Dead men do tell tales through their physical remains. AP Photo/Francesco Bellini

What the archaeological record reveals about epidemics throughout history – and the human response to them

People have lived with infectious disease throughout the millennia, with culture and biology influencing each other. Archaeologists decode the stories told by bones and what accompanies them.

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