1) The first graphical web browser, Mosaic, was released in 1993 and played a key role in popularizing the World Wide Web.

2) The role of the media in politics is to provide information, analysis, and scrutiny of government actions, policies, and public affairs, serving as a watchdog and facilitating public discourse and transparency.

3) Bats are the only mammals capable of sustained flight.

4) The oldest known musical instrument is a flute made from a bird bone, estimated to be around 43,000 years old.