Yes, the GEO reports are good snapshots of complex issues. There's a 2003 update, Nals:
http://mirror.unep.org/geo/pdfs/GEO__lac2003English.pdf
There's a 2005 GEO for the Caribbean, but in truth it focuses mainly on the English-speaking Caribbean.
There's also a series of GEO's for Latin American and Caribbean cities, including one just concluded for Santo Domingo which has not been published yet. I've been trying to get my hands on a copy of that one, as I suspect it will have alot of good material we can use in the
Green Team blog.
I'll have the web addresses for all the GEO series addressing Latin America & the Caribbean (there are dozens) in the new "tools" section I am adding to my webpage,
www.temasactuales.com, for those of you interested in that sort of thing.