1) The development of the World Wide Web Consortium (W3C) and web standards has ensured interoperability and compatibility across different web browsers and devices.

2) The Olympic Games, originating in ancient Greece, were revived in 1896 and are now held every four years, bringing together athletes from around the world.

3) The word "computer" contains three vowels: O, U, and E.

4) The first photograph of a black hole was captured in 2019 using a network of telescopes around the world.