Standard paper cannot be folded in half more than 7 times.
232
The world’s smallest book, “Teeny Ted from Turnip Town”, is 100×70 micrometers in size and requires a scanning electron microscope to read, as light beams are too large.
6
Cows can sleep standing up, but they can only dream lying down.
745
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
The offspring of two sets of identical twins are legally cousins but genetically siblings.
63
In Japan, it is tradition for husbands to get a monthly allowance from their wives.
6