dumb question: degree symbol

[Ramon Diaz-Uriarte]

Hi,

I know this is a really dumb question, but its driving me nuts:
how do I get the "o" of degree (say, for celsius, or for latitude)? I was able
to get something like it with a "\circ" as index, but this seems an overkill.
Any simpler ways? I actually think it can be generated with the keyboard, but
how (with a US keyboard)?

Thanks,

Ramon