For every gallon of sea water, you get more than a quarter pound of salt.
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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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Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
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The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
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The left ear is more responsive to words of love and emotion whispered into it than the right.
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Some toothpastes and deodorants contain the same chemicals found in antifreeze.
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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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Airports that are at higher altitudes require a longer airstrip due to lower air density.
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