The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
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According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
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Brass doorknobs automatically disinfect themselves in about 8 hours.
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One 75-watt bulb gives more light than three 25-watt bulbs.
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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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Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
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