Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
The 'L.L.' in L.L. Bean stands for 'Leon Leonwood'.
30
There are 293 ways to make change for a dollar.
148
Coins usually survive in circulation for about 30 years.
66
Real diamonds do not show up on x-ray.
36
Paper money is not made from wood pulp but from cotton. This means that it will not disintegrate as fast if it is put in the laundry.
37
In many countries, urine was used as a detergent for washing.
17