The opposite sides of a dice cube always add up to seven.
390
There is a family with a genetic condition that makes their skin blue, who have been isolated in rural Kentucky for generations.
34
Months that begin on a Sunday will always have a 'Friday the 13th'.
362
A Native American tribe in South Dakota collects bottle caps left by campers, using them as currency. Several banks in the area now recognize the caps as legal tender.
225
There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
-12
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
False teeth are often minutely radioactive.
214
Each year, approximately 250,000 American husbands are physically attacked and beaten by their wives.
195