Bob,
The main problem with lone term climate prediction science is that it is extremely new,and that particular branch of science has no record of correct predictions. Now that isn't their fault, but it is the fault of any that overstate the certainty of their predictions.
The usual response to this is,"but can we afford to wait until their predictions are validated before we do something?" Well the obvious answer is we just don't know, what we just don't know!
On the bright side, conservation and efficient use of resources is always a good idea,so we can push for that. In this country we could boost the economy by pushing for-more efficient houses,lighting,cars, transportation, manufacturing ,water use etc. Frankly I don't know why folks in dry western states don't use their waste water to grow trees that would shade their houses.A simple bypass with a device that would separate most of the solids would allow them to put 100 gallons of water a day on the tree of their choice.Screw the grass lawns-if there is adequate water/nutrients all that sunlight will give fast growing shade trees.Some of the water will be a bit basic(soap-detergent), but it can be made neutral easily enough.
Charlie