Airports that are at higher altitudes require a longer airstrip due to lower air density.
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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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Brass doorknobs automatically disinfect themselves in about 8 hours.
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Nylon is made from coal and petroleum.
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Scientists are working on a portable spray-on-skin that can heal severe wounds in just a few minutes.The spray mainly contains important proteins that can reprogram the injured cells to become stem cells, and back to young uniformed skin cells. So far they were able to accelerate healing process from 12 weeks to 21 days with a similar approach.
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One gallon of used motor oil can ruin approximately one million gallons of fresh water!
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