The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
The first telephone book was one page long and had only 50 names in it.
91
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
Grenades were invented in China over 1,000 years ago.
50
In 1537, England's King Henry VII officially declared February 14th the holiday of St. Valentine's Day.
52
Nazi leader Adolf Hitler had only one testicle.
117
The first bomb dropped on Germany in WWII killed the only elephant in the Berlin zoo!
166