When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
No matter how cold it gets, gasoline will not freeze.
107
One cubic foot of gold weighs more than 1,200 pounds!
78
Aluminum used to be more valuable than gold!
84
The smell of freshly cut grass is actually a plant distress call.
31
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
One third of the electricity produced on earth is used to power electric light bulbs!
75