When his wife died, the paleontologist Barry James poured his grief into the reconstruction of a triceratops skeleton that they had started together.

An analysis of tooth enamel from animals that roamed the western United States about 150 million years ago, including (from left) Allosaurus, Apatosaurus, a herd of Diplodocus and two Camptosaurus, ...

The weirdness comes from the gluons. Quantum chromodynamics, the force that holds protons together, is modeled closely on quantum electrodynamics, the force that holds atoms together—but the gluons ...

Although both the Allosaurus and T Rex lived in prehistoric North America, the Allosaurus grazed the lands of Europe, and Portugal (way before they were named). On the other hand, the T Rex also ...

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