Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
A typical lead pencil can draw a line that is 35 miles long.
158
A million dollars weighs about a metric ton. Hence the expression "a ton of money."
66
The yin-yang pattern's earliest use is in Rome - not China!
125
The key to happiness is spending your money on experiences rather than possessions, according to studies.
21
There are more fatal car accidents in July than any other month.
85
One human hair can support 3 ounces.
191
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12