Balsa wood is classified as a hard wood!
41
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Pure water (H2O) does not conduct electricity on its own.
46
No matter how cold it gets, gasoline will not freeze.
107
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Iron weighs more after it rusts.
16