Absolutely.  I did not mean to blame any of the countries I named in particular.  With issues like global warming, we all contribute.  The U.S. more than most, no doubt.
ah, but Leanan, (just be Lucifer's advocate) how much food, technology, etc., does the US produce relative to the rest of the world?
I don't think it matters.  If, say, Dr. Goodstein's worst-case scenario happens, and we tip the world climate into a state "incompatible with life," will anyone care what we did to produce those emissions?  Building nuclear missiles, growing food, driving SUVs, or mass barbecuing at tailgating parties - does it matter?