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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Only about 2% of the world population has green eyes.
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The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
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The largest breed of rabbit is the Flemish Giant.
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Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
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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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Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
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