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!
21
Scientists aren't sure what color dinosaurs were.
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Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
For every gallon of sea water, you get more than a quarter pound of salt.
45
Iron weighs more after it rusts.
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