A pipe 2 feet in diameter will allow four times more fluid to pass through it than a pipe 1 foot in diameter.
20
Americans are responsible for generating roughly 20% percent of the garbage in the world.
29
When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
423
160 cars can drive side by side on the Monumental Axis in Brazil, the world's widest road.
39
30 years ago, you could buy a lifetime, unlimited first-class travel pass with American Airlines for $250,000.
14
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
30
If you get water flowing fast enough, it can cut metal.
354