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
Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
When glass breaks, the cracks move faster than 3,000 miles per hour.
47
Stilts were invented by French shepherds who needed a way to get around in wet marshes.
45
Less than 3% of the water produced at a large municipal water treatment plant is used for drinking purposes!
24
More Americans have died in car accidents than have died in all the wars ever fought by the United States.
55
When watching a DVD press stop-stop-play-skip to skip the ads and go straight to the movie.
23
A pipe 2 feet in diameter will allow four times more fluid to pass through it than a pipe 1 foot in diameter.
20