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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Sound travels about 4 times faster in water than in air.
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Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
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Pumice is the only rock that floats on water.
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Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
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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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