FACTUAL RIDDLES XXXVI

What are the longest-running soap operas in American television history, and why are they called "soap operas"?

Answers:

1. Guiding Light - 57 years (1952-2009)
2. General Hospital - 55 years (1963 - present)
3. As The World Turns - 54 years (1956 - 2010)
4. Days of Our Lives - 53 years (1965 - present) 

The early sponsors of these programs were soap manufacturers - targeting housewives.  Although we associate "opera" today with singing, the word comes from "opus" and can mean any dramatic work.