Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Sound travels about 4 times faster in water than in air.
408
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Most dust particles in your house are made from dead skin!
67
Iron weighs more after it rusts.
68
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
According to studies, men change their minds two to three times more often than women.
72