The Gate Tower Building skyscraper in Japan has a highway passing through its fifth, sixth and seventh floors.
7
The chlorine smell in swimming pools is accentuated by the chemical's reaction with impurities (like poop.)
7
No matter its size or thickness, no piece of paper can be folded in half more than 8 times.
-64
No piece of square dry paper can be folded more than 7 times in half!
26
Mentally doing a task makes you better at it. Your mind can barely tell the difference.
18
By raising your legs slowly and laying on your back, you can't sink in quicksand.
105
The weight of air in a milk glass is about the same as the weight of one aspirin tablet.
63
Oak trees can live 200 or more years.
61