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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Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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The oldest glowing lightbulb was first switched on in 1901 and lives in fire stations in Livermore, CA. It is known as the Centennial Light.
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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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