Mars had an oxygen-rich atmosphere around 4 billion years ago
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In Georgia, there is an airtight room called the Crypt of Civilization that was sealed in 1940. It contains numerous artefacts documenting what life was like at the time of sealing, and is scheduled to be opened in the year 8113 to show people of the future exactly what life was like.
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The University of Oxford (teaching since 1096) predates the Aztec empire (1428 - 1521).
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You forget 90% of your dreams.
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Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
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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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The largest breed of rabbit is the Flemish Giant.
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