Galalith is a type of plastic that can be made from milk. It is odourless, insoluble in water, biodegradable, anti-allergenic, antistatic, and virtually non-flammable.
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Brass doorknobs automatically disinfect themselves in about 8 hours.
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Iron weighs more after it rusts.
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A cubic yard of air weighs about 2 pounds at sea level.
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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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Indoor pollution is 10 times more toxic than outdoor pollution.
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Scientists are now able to grow 'beating' heart tissue in a lab!
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The average home creates more pollution than does the average car.
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