During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
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Neanderthal man had a brain capacity 100cc larger than modern man's.
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One 75-watt bulb gives more light than three 25-watt bulbs.
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The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
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Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
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Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
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A single speck of dust is half way in size between a subatomic particle and the Earth.
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