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
In 1982, a high school student from Los Angeles, California unscrambled the Rubik's Cube in 22.95 seconds.
60
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
There's no evidence that pirates made people walk the plank.
151
In 1897, Bayer, who is the maker of Aspirin, marketed the drug heroin.
56