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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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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When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
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There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
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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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0.3% of solar energy from the Sahara is enough to power the whole of Europe.
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One 75-watt bulb gives more light than three 25-watt bulbs.
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German chemists made a replica of a trophy the size of one molecule.
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