A 'jiffy' is an actual unit of time for 1/100th of a second!
66
A cubic yard of air weighs about 2 pounds at sea level.
31
Nearly 50% of the world's scientists are assigned to military projects.
71
One barrel of petroleum holds 42 gallons.
20
According to studies, men change their minds two to three times more often than women.
72
The bark of an older redwood tree is fireproof.
65
Iron weighs more after it rusts.
16