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

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

3) Improved meteorological forecasting and early warning systems have significantly contributed to better preparedness and mitigation efforts for cyclones, reducing the loss of life and property.

4) The world's largest desert is the Antarctic Desert, covering around 5.5 million square miles.