Airports that are at higher altitudes require a longer airstrip due to lower air density.
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Out of all the senses, smell is most closely linked to memory.
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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Sound travels fifteen times faster through steel than through air.
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One gallon of used motor oil can ruin approximately one million gallons of fresh water!
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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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At 15 years old, Jack Andraka invented a method of diagnosing pancreatic cancer, thus helping to save the lives of millions of people around the world. It is 168 times faster, 26,000 times cheaper, 400 times more sensitive, and has a 99% success rate.
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