One barrel of petroleum holds 42 gallons.
20
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Aluminum used to be more valuable than gold!
84
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13