NPR Sunday Puzzle (Jan 25, 2015): Welcome, now Go Away!

NPR Sunday Puzzle (Jan 25, 2015): Welcome, now Go Away!:

Q: Name someone who welcomes you in. Insert the letter U somewhere inside this, and you'll name something that warns you to stay away. Who is this person, and what is this thing?

I initially thought of a Siren and a siren, but there's no U added. I'll let you take it from here.

Thinking of the ocean and warnings should hopefully have led you to bell buoy, but if not, "let you take it from here" was a hint to a bell boy.

A: BELL BOY --> BELL BUOY

NPR Sunday Puzzle (Jan 18, 2015): Mixed up Mammals

NPR Sunday Puzzle (Jan 18, 2015): Mixed up Mammals:

Q: Name two animals, both mammals, one of them domestic, the other wild. Put their letters together, and rearrange the result to name another mammal, this one wild, and not seen naturally around North America. What mammal is it?

A: DOG + GNU = DUGONG

NPR Sunday Puzzle (Jan 11, 2015): Nine minus six is...

NPR Sunday Puzzle (Jan 11, 2015): Nine minus six is...:

Q: Think of a U.S. city whose name has nine letters. Remove three letters from the start of the name and three letters from the end. Only two will remain. How is this possible, and what city is it?

Both ******* (from The Simpsons) and ******* (from Gilligan's Island) should be able to answer this.

Edit: The fictional characters Rev. Lovejoy and The Professor went to Texas Christian University (TCU) in Fort Worth, TX.

A: Fort Worth (Texas)

Alternate answers also accepted by Will:
Flatwoods, Wentworth, Pontoosuc

NPR Sunday Puzzle (Jan 4, 2015): Capital and Country Mixup

NPR Sunday Puzzle (Jan 4, 2015): Capital and Country Mixup:

Q: Name a world capital. Change a letter in it and rearrange the result to name a country. Then change a letter in that and rearrange the result to name another world capital. What names are these?

Sorry about the delay. No time to post a clue, but I'll leave that to everyone else today.

A: BERLIN --> BRUNEI --> BERUIT