One cubic foot of gold weighs more than 1,200 pounds!
78
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Aluminum used to be more valuable than gold!
84
Nylon is made from coal and petroleum.
42
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
4.5 pounds of sunlight strike the Earth each day.
27
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
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