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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When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
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For every gallon of sea water, you get more than a quarter pound of salt.
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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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Sound at the right vibration can bore holes through a solid object.
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Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
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Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
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