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
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
If you have 1 billion dollars and spend $1,000 every day, it would take you 2,740 years to go broke.
31
The Main Library at Indiana University sinks over an inch every year because when it was built, engineers failed to take into account the weight of all the books that would occupy the building.
240
Those things you see in your eyes when you stare into space are called Mouches Voltanes, which are also broadly referenced to as Floaters.
9
The number of text messages sent and received in a given day is greater than the world's population.
198
An iceberg contains more heat than a lit match.
73