Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Balsa wood is classified as a hard wood!
41
Pumice is the only rock that floats on water.
14
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
The inventor of the Super Soaker squirt gun was a NASA Scientist who also helped develop the Stealth Bomber and the Galileo mission to Jupiter.
7
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310