Pumice is the only rock that floats on 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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Nearly 50% of the world's scientists are assigned to military projects.
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Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
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The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
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Termites are being researched as a possible renewable energy source as they can produce up to 2 litres of hydrogen from ingesting a single sheet of paper, making them one of the planet’s most efficient bioreactors.
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