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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The Earth's atmosphere weighs about 5.5 quadrillion tons.
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Sound travels about 4 times faster in water than in air.
408
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Sound travels fifteen times faster through steel than through air.
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Most dust particles in your house come from dead skin.
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Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
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