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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Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
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Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
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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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A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
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The left ear is more responsive to words of love and emotion whispered into it than the right.
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