Phillip Pullman is obsessed with condensation!
Every other window in the Lockhart books was streaming with water. And I recall a few choice bits from Dark Materials (so far) too.
Oh, well actually, heres another thought. How in the hell did they make a Hollywood Movie out of Northern Lights? I can't imagine that any of the best bits, or actual plot, are in it. Is the bear palace covered in rotting meat and poop at least? I don't know why that bit stood out to me so much, in a book filled with child murder.