If you get water flowing fast enough, it can cut metal.
354
There was once an undersea post office in the Bahamas.
241
The human eye blinks an average of 4,200,000 times a year.
233
If you dropped an aerodynamic object (such as a bullet) from the Empire State Building, you could kill someone.
132
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
By peeing in the shower, you can save 1,157 gallons of water a year.
31
When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
423
