Mars had an oxygen-rich atmosphere around 4 billion years ago
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A cow produces around 200,000 glasses of milk in her lifetime.
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There are so many kinds of apples that if you ate a new one everyday, it would take over 20 years to try them all.
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Cows can sleep standing up, but they can only dream lying down.
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A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
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Lurch, a Watusi bull, had the largest horns in the world.
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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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