1) The world's largest flower is the Rafflesia arnoldii, which can grow up to 3 feet (1 meter) in diameter and weighs about 15 pounds (7 kilograms).

2) The national animal of Australia is the kangaroo.

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

4) The word "island" contains two vowels: I and A.