1) The hibiscus flower is commonly associated with tropical regions and is the national flower of several countries, including Malaysia, South Korea, and Haiti.

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

3) Chocolate is derived from the beans of the cacao tree and has been enjoyed as a delicacy for centuries. It was first cultivated by the ancient Mayans and Aztecs, who considered it a sacred drink. Today, chocolate is consumed in various forms, including bars, truffles, and beverages, and is known for its rich flavor and potential health benefits, such as improving mood and antioxidant properties.

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.