A million dollars' worth of $100 bills weighs only 22 pounds!
32
Mentally doing a task makes you better at it. Your mind can barely tell the difference.
18
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
Tae Kwon Do is only around 60 years old.
64
It's impossible to kill yourself by holding your breath.
22
The number of text messages sent and received in a given day is greater than the world's population.
198