Balsa wood is classified as a hard wood!
41
Nearly 50% of the world's scientists are assigned to military projects.
71
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
A cesium atom in an atomic clock beats over nine billion times a second.
43
Pure water (H2O) does not conduct electricity on its own.
46
Neanderthal man had a brain capacity 100cc larger than modern man's.
50