1) The Great Barrier Reef in Australia is the largest living structure on Earth and can be seen from space.

2) J.K. Rowling's "Harry Potter" series of books has sold over 500 million copies worldwide and has been translated into 80 languages.

3) The process of impeachment involves charging a public official, such as a president or high-ranking government official, with misconduct and potentially removing them from office through a trial and vote by the legislature.

4) The word "chocolate" contains four vowels: O, O, A, and E.