1) The world's largest diamond, the Cullinan, was discovered in South Africa in 1905 and weighed over 3,000 carats.

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

4) The Great Barrier Reef in Australia is the largest coral reef system in the world and is visible from space.