The University of Oxford (teaching since 1096) predates the Aztec empire (1428 - 1521).
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Cows can sleep standing up, but they can only dream lying down.
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The strangers in your dreams are actually people that you've seen in real life.
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The largest breed of rabbit is the Flemish Giant.
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Your body is creating and killing about 2.4 million red blood cells per second.
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The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
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