1) The longest-running TV show in history is "The Simpsons," which has been on the air since 1989 and has over 700 episodes.

2) The Industrial Revolution led to significant urbanization, as people migrated from rural areas to cities in search of employment in factories.

3) The New York Stock Exchange (NYSE) is the largest stock exchange in the world.

4) The fingerprints of koalas are so similar to humans that they have been mistaken at crime scenes.