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 concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
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Brass doorknobs automatically disinfect themselves in about 8 hours.
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One gallon of used motor oil can ruin approximately one million gallons of fresh water!
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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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Scientists are now able to grow 'beating' heart tissue in a lab!
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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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