The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
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Hot water can freeze faster than cold water.
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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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Because heat expands the metal, the Eiffel Tower always leans away from the sun.
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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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Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
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MIT has developed a camera that captures the speed of light at a trillion frames per second.
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Iron weighs more after it rusts.
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