All of these inventions came from the spread of Islam

While much of Europe was stuck in the Dark Ages, the spread of Islam led to innovations in math, science, and medicine. These are the inventions we're still using today.

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National Geographic

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National Geographic

What extreme athletes learn when they push to the limits

At the edge of human endurance, the marathon monks say, the boundary between life and death becomes paper-thin.

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National Geographic

NASA announces the astronauts for the next Artemis mission. Here's what they'll be doing.

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