The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
For every gallon of sea water, you get more than a quarter pound of salt.
45
The average temperature at 40,000 feet above sea level is -60 F.
56
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Pure water (H2O) does not conduct electricity on its own.
46
Aluminum used to be more valuable than gold!
84