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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Airports that are at higher altitudes require a longer airstrip due to lower air density.
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Because heat expands the metal, the Eiffel Tower always leans away from the sun.
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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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In zero gravity, a candle's flame is round and blue.
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If the chemical sodium is dropped into water it will immediately and violently explode.
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Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
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