Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
Passengers on the Beijing subway can pay with plastic bottles.
29
Babies are born without knee caps.
78
A pipe 2 feet in diameter will allow four times more fluid to pass through it than a pipe 1 foot in diameter.
20
Oak trees can live 200 or more years.
61
Real diamonds do not show up on x-ray.
36
Q-Tip Cotton Swabs were originally called Baby Gays.
55
In an average hour, there are over 61,000 Americans airborne over the United States.
24