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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Research indicates that plants grow healthier when they are stroked.
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It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
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Nylon is made from coal and petroleum.
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Iron weighs more after it rusts.
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A ball of glass will bounce higher than a ball made of rubber.
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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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The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
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