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 have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
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In zero gravity, a candle's flame is round and blue.
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Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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The inventor of the Super Soaker squirt gun was a NASA Scientist who also helped develop the Stealth Bomber and the Galileo mission to Jupiter.
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Out of all the senses, smell is most closely linked to memory.
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