The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
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At room temperature, the average air molecule travels at the speed of a rifle bullet.
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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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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
One ragweed plant can release as many as one billion grains of pollen!
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