1. What is the oldest known city in all of the Americas [and one of the very oldest in the world, older than the earliest pyramid in Egypt]?
2. Who perfected the first commercially viable cathode-ray tube? Then made and sold the first commercially available television sets? And then also created the first television network?
3. What is the most widely produced [in greatest quantity] food staple in the world?
4. Who was the oldest ever active NFL football player?
5. Currently, who is the all-time "Jeopardy" money-winner?
