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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A cubic yard of air weighs about 2 pounds at sea level.
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According to studies, men change their minds two to three times more often than women.
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Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
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MIT has developed a camera that captures the speed of light at a trillion frames per second.
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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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One gallon of used motor oil can ruin approximately one million gallons of fresh water!
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