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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Your brain is 80% water.
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Scientists in Germany have developed a candy that doesn't cause cavities.
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The earth is approx. 6,588,000,000,000,000,000 tons.
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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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Airports that are at higher altitudes require a longer airstrip due to lower air density.
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Optical illusions occur when what the eyes see conflicts with what the brain expects.
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