The New York Stock Exchange started as a coffee shop!
99
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.
479
You can tape a small mirror onto a cone speaker, play music and shine a laser on to the mirror and the reflection will look like a laser light show on your wall.
102
There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22
The chlorine smell in swimming pools is accentuated by the chemical's reaction with impurities (like poop.)
7
The weight of air in a milk glass is about the same as the weight of one aspirin tablet.
63
Dartboards are made out of horsehairs.
129