I'm having trouble with keeping "units" on the same line, or together. For example, g C m-2 (grams of carbon per square meter) often gets broken between the "-" and "2". I realize it's possible to use non-breaking spaces, but this doesn't help in this situation because there aren't spaces between "-" and "2". Any ideas?
I'm using Microsoft Word 2007 on a PC (and mac). Apologies if this is not an appropriate question for this site.