1. In 1889, the first public demonstration of Thomas Edison's Kinetoscope, a prototype for the motion picture projector, took place in New York City. This invention paved the way for modern cinema and visual media.

2. On April 22, 1970, millions of people participated in the first Earth Day, organized by Senator Gaylord Nelson. The event helped raise awareness about environmental issues and led to the creation of the Environmental Protection Agency.

3. The famous New York City landmark, the Flatiron Building, was completed on April 22, 1902. This iconic triangular-shaped structure was designed by architect Daniel Burnham and was one of the tallest buildings in the city at the time.

4. In 1937, legendary baseball player Babe Ruth hit his 3rd and final home run at Yankee Stadium. Ruth is considered one of the greatest baseball players of all time, and this moment was a significant milestone in his career.

5. On April 22, 2005, the New York Times published an article revealing that the U.S. government had authorized the National Security Agency to conduct surveillance on American citizens without a warrant. This was a controversial revelation that sparked a national debate about privacy rights and government surveillance.