One barrel of petroleum holds 42 gallons.
20
Aluminum used to be more valuable than gold!
84
Diamonds can be shattered with a hammer.
-104
Cold water weighs more than hot water.
93
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Balsa wood is classified as a hard wood!
41
One ragweed plant can release as many as one billion grains of pollen!
51
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13