Airports that are at higher altitudes require a longer airstrip due to lower air density.
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A cubic yard of air weighs about 2 pounds at sea level.
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Scientists are now able to grow 'beating' heart tissue in a lab!
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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Liquid TIDE laundry detergent glows under a blacklight.
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Pure water (H2O) does not conduct electricity on its own.
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The sun is 330,330 times larger than the earth.
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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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