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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Aluminum used to be more valuable than gold!
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Sound travels fifteen times faster through steel than through air.
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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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4.5 pounds of sunlight strike the Earth each day.
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Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
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Optical illusions occur when what the eyes see conflicts with what the brain expects.
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