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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The Earth's atmosphere weighs about 5.5 quadrillion tons.
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The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
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For a high school science fair project, 17-year-old Michio Kaku built a particle accelerator in his parent's garage that was able to generate a magnetic field 20,000 times greater than the Earth's and produce collisions powerful enough to create antimatter.
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Because heat expands the metal, the Eiffel Tower always leans away from the sun.
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No matter how cold it gets, gasoline will not freeze.
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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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