When withdrawing money from an ATM, the 'whirring' sound before your money pops out is actually a recording. The actual mechanism is so far back that you can't hear it.
282
The human eye blinks an average of 4,200,000 times a year.
233
At 90 degrees below zero, your breath will freeze in mid-air and fall to the ground.
25
Diamonds mined in Brazil are harder than those found in Africa.
40
Déjà vu occurs when your brain tries to apply a memory of a past situation to your current one, fails, and makes you feel like it's happened.
12
The hands of the clock on the back of the $100 bill are set at approximately 4:10.
72
American car horns beep in the tone of F.
66