Nearly 50% of the world's scientists are assigned to military projects.
71
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Indoor pollution is 10 times more toxic than outdoor pollution.
62
The average temperature at 40,000 feet above sea level is -60 F.
56
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
The average home creates more pollution than does the average car.
33
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11