No matter its size or thickness, no piece of paper can be folded in half more than 8 times.
-64
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
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 French named one of their aircraft carriers after Ferdinand Foch, a man who once said "Airplanes are interesting toys but of no military value".
10
Speed dating was invented by a Rabbi in 1999.
45
An olive tree can live up to 1,500 years!
58
The Band-Aid was originally made for the inventor's wife, who often cut and burned herself while cooking.
6
In a year approximately 900 million trees are cut down to make the raw materials needed for American pulp mills and paper.
-16