1. What kind of doctor was Doug Ross, George Clooney’s character on 'ER'?

2. In Philip Pullman’s 'His Dark Materials' books, an alethiometer is a “Golden” version of what device?

3. Because of the state’s vast forests, what symbol of Maine appears on its state flag and in its nickname?

4. What city flies “12th Man” flags during football season to celebrate its team, the reigning Super Bowl champs?

5. What invention did Thomas Edison test in 1877 by reciting the words to “Mary Had a Little Lamb”?

What’s the "Kennection" between all five answers?