A cubic yard of air weighs about 2 pounds at sea level.
31
4.5 pounds of sunlight strike the Earth each day.
27
In zero gravity, a candle's flame is round and blue.
16
Aluminum used to be more valuable than gold!
84
Nylon is made from coal and petroleum.
42
Balsa wood is classified as a hard wood!
41
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61