High in the Peruvian Andes, a ribbon of thousands of hand-dug pits marches across a barren hillside, so regular and extensive ...

A University of Arizona-led team has used a camera orbiting Mars to capture the closest images yet of a rare interstellar ...

I see the Nesher Ramla Homo fossils as a rare chance to watch human evolution get rewritten in real time. A few fragmentary ...

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