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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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
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A cesium atom in an atomic clock beats over nine billion times a second.
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Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
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Nearly 50% of the world's scientists are assigned to military projects.
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Galalith is a type of plastic that can be made from milk. It is odourless, insoluble in water, biodegradable, anti-allergenic, antistatic, and virtually non-flammable.
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