You can start a fire with ice.
367
Stilts were invented by French shepherds who needed a way to get around in wet marshes.
45
When glass breaks, the cracks move faster than 3,000 miles per hour.
47
Couples' personalities converge over time to make partners more and more similar.
235
NYC's Metropolitan Transit Authority (MTA) dumps old subway cars into the ocean to serve as artificial reef.
8
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
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
An olive tree can live up to 1,500 years!
58