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.
5
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
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A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Pure water (H2O) does not conduct electricity on its own.
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Out of all the senses, smell is most closely linked to memory.
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Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
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Sound travels fifteen times faster through steel than through air.
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