In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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The University of Oxford (teaching since 1096) predates the Aztec empire (1428 - 1521).
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Your thumb is about the same size as your nose.
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In the last 7 years, humanity has discovered 43 potentially habitable planets.
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Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
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