1) The global push for COVID-19 vaccination campaigns has been a significant focus, with the development and distribution of vaccines to combat the spread of the virus and protect public health.

2) The human brain has a storage capacity equivalent to around 2.5 petabytes, which is roughly equivalent to three million hours of TV shows.

3) The word "cheese" contains three vowels: E, E, and E.

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