One cubic foot of gold weighs more than 1,200 pounds!
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Aluminum used to be more valuable than gold!
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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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Airports that are at higher altitudes require a longer airstrip due to lower air density.
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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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Scientists aren't sure what color dinosaurs were.
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0.3% of solar energy from the Sahara is enough to power the whole of Europe.
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Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
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