In many countries, urine was used as a detergent for washing.
17
"Strategic incompetence" is the art of avoiding certain tasks by pretending you don't know how to do them.
16
One human hair can support 3 ounces.
191
Play-Doh was first manufactured as a wallpaper cleaner.
122
There are 2,500,000 rivets in the Eiffel Tower.
98
The weight of air in a milk glass is about the same as the weight of one aspirin tablet.
63
NYC's Metropolitan Transit Authority (MTA) dumps old subway cars into the ocean to serve as artificial reef.
8
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