Don, an admirable goal but in this case I think it's far beyond reach; the "what" and the "who" are intermingled at a subatomic level. I don't have the time or the education to analyse the data myself and I don't trust any of the information available to me in the media; climate change is happening, or maybe it isn't, human are responsible, or maybe we aren't, cap and trade is a feasible solution, or maybe it isn't.
The stuff that drives me crazy is when I find out that ethanol consumes more energy to produce than it nets (after my government has mandated it's inclusion in gasoline as a way of reducing energy consumption), when I find out that environmental impact of collecting and recycling may be higher than impact of just landfilling or that buying locally may result in higher energy cost than buying from some far-away place, etc, etc, etc.
It's frustrating and more often than not I find myself unable to calculate the relative pros and cons of one choice vs another. What's missing for me is the foundation; reliable, complete information from a non-partisan source. Give me that and I'll be all over doing my part.