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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Sound travels about 4 times faster in water than in air.
408
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
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Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
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Because heat expands the metal, the Eiffel Tower always leans away from the sun.
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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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Most liquid laundry detergents are alive with living organisms that help to break down stains!
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In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
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