Balsa wood is classified as a hard wood!
41
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Nearly 50% of the world's scientists are assigned to military projects.
71
The average home creates more pollution than does the average car.
33
German chemists made a replica of a trophy the size of one molecule.
68
The force of a suction cup is calculated using F=AP.
15
Iron weighs more after it rusts.
68
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