The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
The sun is 330,330 times larger than the earth.
75
Balsa wood is classified as a hard wood!
41
The average home creates more pollution than does the average car.
33
A cesium atom in an atomic clock beats over nine billion times a second.
43
One third of the electricity produced on earth is used to power electric light bulbs!
75
The average temperature at 40,000 feet above sea level is -60 F.
56