The average temperature at 40,000 feet above sea level is -60 F.
56
Aluminum used to be more valuable than gold!
84
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Most dust particles in your house come from dead skin.
48
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
The storage capacity of human brain exceeds 4 Terrabytes.
140
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108