Iron weighs more after it rusts.
16
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
Sound at the right vibration can bore holes through a solid object.
134
In zero gravity, a candle's flame is round and blue.
16
Iron weighs more after it rusts.
68