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 Federal Reserve System, often referred to as the Fed, is the central banking system of the United States.

3) The word "chocolate" contains four vowels: O, O, A, and E.

4) The Alps, located in Europe, are a popular destination for skiing, mountaineering, and hiking.