The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
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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 average home creates more pollution than does the average car.
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Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
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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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Scientists are now able to grow 'beating' heart tissue in a lab!
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Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
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