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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Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
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Scientists are now able to grow 'beating' heart tissue in a lab!
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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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Pumice is the only rock that floats on water.
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