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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A cubic yard of air weighs about 2 pounds at sea level.
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Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
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Optical illusions occur when what the eyes see conflicts with what the brain expects.
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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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Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
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Most liquid laundry detergents are alive with living organisms that help to break down stains!
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One ragweed plant can release as many as one billion grains of pollen!
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