Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
In zero gravity, a candle's flame is round and blue.
16
Sound travels fifteen times faster through steel than through air.
134
Your brain is 80% water.
525
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Indoor pollution is 10 times more toxic than outdoor pollution.
62
