At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
In zero gravity, a candle's flame is round and blue.
16
One barrel of petroleum holds 42 gallons.
20
One cubic foot of gold weighs more than 1,200 pounds!
78
One 75-watt bulb gives more light than three 25-watt bulbs.
57
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Scientists in Germany have developed a candy that doesn't cause cavities.
11