1) The first commercially available digital camera, the Dycam Model 1, was introduced in 1990 and had a resolution of 376 x 240 pixels.

2) The musical "Les Misérables" is one of the longest-running shows in the West End and Broadway, with over 13,000 performances.

3) 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.

4) Serena Williams is an American professional tennis player widely regarded as one of the greatest athletes in the sport. She has won numerous Grand Slam titles and Olympic gold medals and has become an influential figure both on and off the tennis court.