Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Sound travels about 4 times faster in water than in air.
408
Iron weighs more after it rusts.
16
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16
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