1) The Mariana Trench in the western Pacific Ocean is the deepest part of the world's oceans, reaching a depth of approximately 36,070 feet (10,994 meters).

2) The Brexit process, initiated by the United Kingdom's referendum in 2016, led to the country's withdrawal from the European Union in 2020, marking a significant political and economic change for both the UK and the EU.

3) Taylor Swift is an American singer-songwriter known for her narrative songwriting, catchy pop tunes, and successful albums such as "Fearless," "1989," and "folklore." She has won numerous awards, including Grammy Awards, and has a dedicated fan base worldwide.

4) The longest-running TV show in history is "The Simpsons," which has been on the air since 1989 and has over 700 episodes.