Nearly 50% of the world's scientists are assigned to military projects.
71
One ragweed plant can release as many as one billion grains of pollen!
51
The average temperature at 40,000 feet above sea level is -60 F.
56
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
One cubic foot of gold weighs more than 1,200 pounds!
78
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
A cesium atom in an atomic clock beats over nine billion times a second.
43