One cubic foot of gold weighs more than 1,200 pounds!
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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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One 75-watt bulb gives more light than three 25-watt bulbs.
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There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
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Hot water can freeze faster than cold water.
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Nylon is made from coal and petroleum.
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Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
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In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
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