FACTUAL RIDDLES XXVI

1. What is dendrochronology?
2. In the phrase EDEN  X, where is X?
3. What's a plangonologist?
4. What do you call an overpass in trucker slang?
5. What was Blondie's maiden name before she married Dagwood Bumstead?

Answers:

1. The study of tree stumps 
2. East of Eden 
3. One who collects dolls 
4. Haircut palace
5. Blondie Boopadoop