According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
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One barrel of petroleum holds 42 gallons.
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When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
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Pumice is the only rock that floats on water.
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A single speck of dust is half way in size between a subatomic particle and the Earth.
15
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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In zero gravity, a candle's flame is round and blue.
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