The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
The storage capacity of human brain exceeds 4 Terrabytes.
140
The only letter not appearing on the Periodic Table is the letter "J".
180
No matter how cold it gets, gasoline will not freeze.
107
A cubic yard of air weighs about 2 pounds at sea level.
31