The average temperature at 40,000 feet above sea level is -60 F.
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Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
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The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
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The Earth's atmosphere weighs about 5.5 quadrillion tons.
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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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There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
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The sun is 330,330 times larger than the earth.
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