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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One cubic foot of gold weighs more than 1,200 pounds!
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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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Diamonds can be shattered with a hammer.
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A cesium atom in an atomic clock beats over nine billion times a second.
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Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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