Brass doorknobs automatically disinfect themselves in about 8 hours.
18
One third of the electricity produced on earth is used to power electric light bulbs!
75
Diamonds can be shattered with a hammer.
-104
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Pumice is the only rock that floats on water.
14
Your brain is 80% water.
525