Aluminum used to be more valuable than gold!
84
Iron weighs more after it rusts.
16
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
For every gallon of sea water, you get more than a quarter pound of salt.
45
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Out of all the senses, smell is most closely linked to memory.
146
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55