Answer:
In Paris but not in France the thinnest of its siblings.
I am all around you but you cannot see me. I have no throat but you can hear me. Valued during summer but despised in the winter.
What body part is pronounced as one letter, but written with three, only two different letters are used?
I am rarely touched but often held. If you are smart you'll use me well. What am I?
I go up but never come down. What am I?
The answer I give is yes, but what I mean is no. What was the question?