[camaraderie]

It is already known that man accounts for about 3.4% of the CO2. So...even if identifying particular molecules is possible, of what importance is it? The questions are...
Does ANY CO2 make a difference in global temperatures?
If so, is it something we should have concerns about?
Is man a big part of this claimed warming or is it mostly natural?
Is it both desireable and possible to do something about it?
What is the cost/benefit analysis of trying to do something about it NOW compared with other things we could use the $$ for?
What changes to our lives and economy will be necessary to offset the claimed effects?
Would it be better to let the claimed effects occur and deal with the results as they occur rather than attempt to prevent them?

Of course...I believe in none of this...but if you ARE persuaded of warming...then you need to consider the questions and develope real and comprehensive answers as opposed to feel good solutions like swapping out your light bulbs for flourescents and relying on windpower for our electrical grid.