Nearly 50% of the world's scientists are assigned to military projects.
71
The force of a suction cup is calculated using F=AP.
15
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
The bark of an older redwood tree is fireproof.
65
If the chemical sodium is dropped into water it will immediately and violently explode.
67
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5