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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Optical illusions occur when what the eyes see conflicts with what the brain expects.
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Sound at the right vibration can bore holes through a solid object.
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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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In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
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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.
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4.5 pounds of sunlight strike the Earth each day.
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One barrel of petroleum holds 42 gallons.
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