Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
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Aluminum used to be more valuable than gold!
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Hot water can freeze faster than cold water.
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Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
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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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A single speck of dust is half way in size between a subatomic particle and the Earth.
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It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
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During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
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