1) The Southern Ocean surrounds Antarctica and is the coldest and least-visited ocean.

2) The largest living structure on Earth is the Great Barrier Reef, spanning over 2,300 kilometers (1,400 miles) along the coast of Australia.

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 "banana" contains three vowels: A, A, and A.