Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
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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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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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The Earth's atmosphere weighs about 5.5 quadrillion tons.
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Because heat expands the metal, the Eiffel Tower always leans away from the sun.
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A 'jiffy' is an actual unit of time for 1/100th of a second!
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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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