One cubic foot of gold weighs more than 1,200 pounds!
78
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Hot water can freeze faster than cold water.
181
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5
The average home creates more pollution than does the average car.
33
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
Brass doorknobs automatically disinfect themselves in about 8 hours.
18