Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
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.
15
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
The force of a suction cup is calculated using F=AP.
15
Sound travels about 4 times faster in water than in air.
408
Airports that are at higher altitudes require a longer airstrip due to lower air density.
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