Only humans shed emotional tears.
331
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
In an average hour, there are over 61,000 Americans airborne over the United States.
24
The weight of air in a milk glass is about the same as the weight of one aspirin tablet.
63
A Swiss man replaced his car's broken heater with a fully functional wood burning stove.
15
When glass breaks, the cracks move faster than 3,000 miles per hour. To photograph the event, a camera must shoot at a millionth of a second!
114