A pipe 2 feet in diameter will allow four times more fluid to pass through it than a pipe 1 foot in diameter.
20
The hole in the soda can tab is actually used to hold a straw in place and stop it from rising.
27
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
People who laugh more are better able to tolerate pain - both physical and emotional.
36
Each year, more than 50,000 people are injured by jewelry in the U.S.
29
An olive tree can live up to 1,500 years!
58
A million dollars' worth of $100 bills weighs only 22 pounds!
32
30 years ago, you could buy a lifetime, unlimited first-class travel pass with American Airlines for $250,000.
14