Contrary to popular belief, hair does not grow back darker and thicker after it has been shaved.
71
The average cough comes out of your mouth at 60 miles per hour.
126
Sudbury Valley School allows students to do whatever they want; no curriculum, tests, homework, or even classes unless requested. 82% of students get accepted to college, as opposed to the 63% national public school average.
21
A portion of the water you drink has already been drunk by someone else, maybe several times over.
170
Donkeys kill more people annually than plane crashes.
927
Ice isn't slippery. What makes people and things slip on ice is water. A thin layer of ice melts when pressure is applied to it and it is this wet layer on top of the ice that is slippery.
153
When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
423
In 1997, a survey reported that 12% of Americans think that Joan of Arc was Noah's wife.
48