Traces of cocaine were found on 99% of UK bank notes in a survey in London in 2000.
142
In 2011, a couple bought a box of textbooks for $10. Inside, they found a 25-cent bill signed by the president of the Republic of Texas, Sam Houston, and subsequently sold it for $63,250.
13
When Charles Darwin first discovered the Galapagos Tortoises, he tried to ride them!
18
Early American humans hunted car-size armadillos and used their shells for houses.
12
The universally popular Hershey bar was used overseas during World War II as currency.
112
In 1518, a "dancing plague" struck Strasbourg, Alsace, whereby hundreds of people danced fervently in the streets over the period of a month. Some suffered heart attacks or strokes, and many others died from sheer exhaustion. It remains unexplained.
19
There's no evidence that pirates made people walk the plank.
151
The Mint once considered producing doughnut-shaped coins!
60