181. A rhinoceros horn is made of compacted hair.

182. The shortest war in history was between Zanzibar and England in 1896. Zanzibar surrendered after 38 minutes.

183. Elwood Edwards did the voice for the AOL sound files (i.e. "You've got Mail!"). He is heard about 27 million times a day. The recordings were done before Quantum changed its name to AOL and the program was known as "Q-Link."

184. A polar bears skin is black. Its fur is actually clear, but like snow it appears white.

185. Elvis had a twin brother named Garon, who died at birth, which is why Elvis middle name was spelled Aron, in honor of his brother.

186. Dueling is legal in Paraguay as long as both parties are registered blood donors.

187. Donkeys kill more people than plane crashes.

188. Shakespeare invented the words "assassination" and "bump."

189. There are a million ants for every person on Earth.

190. If you keep a goldfish in the dark room, it will eventually turn white.

191. Women blink nearly twice as much as men.

192. The name Jeep comes from "GP", the army abbreviation for General Purpose.

193. Right handed people live, on average, nine years longer than left handed people do.

194. There are two credit cards for every person in the United States.

195. Cats' urine glows under a black light.

196. A "quidnunc" is a person who is eager to know the latest news and gossip.

197. The first US Patent was for manufacturing potassium carbonate (used in glass and gunpowder). It was issued to Samuel Hopkins on July 31, 1970.

198. Leonardo Da Vinci invented the scissors, the helicopter, and many other present day items.

199. In the last 4000 years no new animals have been domesticated.

200. 25% of a human's bones are in its feet.