A cesium atom in an atomic clock beats over nine billion times a second.
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Most dust particles in your house are made from dead skin!
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Hot water can freeze faster than cold water.
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The force of a suction cup is calculated using F=AP.
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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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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Brass doorknobs automatically disinfect themselves in about 8 hours.
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Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
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