Passengers on the Beijing subway can pay with plastic bottles.
29
If you get water flowing fast enough, it can cut metal.
354
The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
A portion of the water you drink has already been drunk by someone else, maybe several times over.
170
You can actually sharpen the blades on a pencil sharpener by wrapping your pencils in aluminum foil before inserting them.
209
The average cough comes out of your mouth at 60 miles per hour.
126
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
The revenue that is generated from gambling is more than the revenue that comes from movies, cruise ships, recorded music, theme parks, and spectator sports combined.
15