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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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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A single speck of dust is half way in size between a subatomic particle and the Earth.
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Scientists in Germany have developed a candy that doesn't cause cavities.
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Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
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Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
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Iron weighs more after it rusts.
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