In many countries, urine was used as a detergent for washing.
17
The largest hotel suite in the world is located 22 stories under the surface in the Grand Canyon Caverns. One night for two people in this 65 million year old cave is $700.
4
The chlorine smell in swimming pools is accentuated by the chemical's reaction with impurities (like poop.)
7
It's impossible to kill yourself by holding your breath.
22
There are 53 Lego bricks manufactured for each person in the world.
83
The roar that we hear when we place a seashell next to our ear is not the ocean, but rather the sound of blood surging through the veins in the ear.
476
When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
423
The Statue of Liberty is made out of copper. When originally built, it looked like a shiny new penny!
10