37 Interesting Things to Know: 1. Coca-Cola was originally green. 2. The most common name in the world is Muhammad. 3. The name of all the continents ends with the same letter that they start with. 4. The strongest muscle in the body is the tongue. 5. There are two credit cards for every person in the United States. 6. TYPEWRITER is the longest word that can be made using the letters only on one row of the keyboard.