Brass doorknobs automatically disinfect themselves in about 8 hours.
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Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
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Scientists are now able to grow 'beating' heart tissue in a lab!
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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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Most liquid laundry detergents are alive with living organisms that help to break down stains!
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The hair of an adult man or woman can stretch 25 percent of its length without breaking.
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In zero gravity, a candle's flame is round and blue.
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