Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Iron weighs more after it rusts.
16
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
Scientists aren't sure what color dinosaurs were.
312
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
A cubic yard of air weighs about 2 pounds at sea level.
31