1) The world's most expensive car is the Bugatti La Voiture Noire, which sold for over $18 million.

2) The world's largest volcano, Mauna Loa in Hawaii, is also one of the most active.

3) Rihanna, born Robyn Rihanna Fenty, is a Barbadian singer, actress, and businesswoman. She has achieved great success in the music industry with hits like "Umbrella," "Diamonds," and "Work," and has also ventured into the worlds of fashion and cosmetics with her brands.

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