Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
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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 at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
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Sound travels about 4 times faster in water than in air.
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One cubic foot of gold weighs more than 1,200 pounds!
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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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When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
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The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
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