1) The world's oldest known recipe is for beer and is over 4,000 years old.

2) The English alphabet has five vowels: A, E, I, O, and U.

3) The United Nations Security Council is responsible for maintaining international peace and security, with five permanent members (China, France, Russia, the United Kingdom, and the United States) holding veto power over resolutions.

4) Mountains are important water sources, as they capture and store precipitation, feeding rivers and supporting ecosystems downstream.