Machu Picchu was built over major fault zones. Now, researchers think they know why

Source: Science MagazineArchaeologists and architects alike have long wondered why 15th century Incans built the grand citadel of Machu Picchu where they did, high in the remote Andes atop a narrow...

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How the people of the Andes evolved to live in high altitudes

Source: Science MagazineScarce oxygen, cold temperatures, and intense ultraviolet radiation make the Andes a tough place to live. How did humans adapt to such heights? A new study of ancient and...

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Modern chocolate shaped like Maya glyphs, the written language they used to communicate

Source: Science MagazineYour Hershey bar may have been worth its weight in gold in Mayan times. A new study reveals that chocolate became its own form of money at the height of Mayan opulence—and that...

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South America’s Inca civilization was better at skull surgery than Civil War doctors

Source: Science MagazineCranial surgery without modern anesthesia and antibiotics may sound like a death sentence. But trepanation—the act of drilling, cutting, or scraping a hole in the skull for...

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