1) The concept of compound interest can be attributed to the ancient Babylonians, who used it in their banking practices.

2) The universe is estimated to be around 13.8 billion years old.

3) The game of rugby originated at Rugby School in England and has since evolved into different versions, including Rugby Union and Rugby League.

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