In 1918, after the treaty of Versailles (end of WWI), the French Commander-in-chief said "This is not a peace. It is an Armistice for 20 years." 20 years and 65 days later, WWII happened.
31
Not swinging your arms when you walk increases the effort of walking by 12%, the equivalent of walking 20% faster or carrying a 10 kg backpack.
12
Donkeys kill more people annually than plane crashes.
927
Pumice is the only rock that floats on water.
14
‘Old people smell’ is actually caused by a chemical, 2-nonenal, that old people secrete through their skin
8
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252
Sloths take two weeks to digest their food.
243