I posted this under General because of the multi disciplinary approach, both economically and scientifically on the future state of the US due to AGW.

Please go upstairs and ding this up so it gets attention. It is about as useful a resource for a non-technical person as there is on the subject.

This is the third revised draft of a multi agency government report on climate impacts in the United States of America. This draft was compiled in Apr 2009.
For those looking for an easy to read and very thorough look at AGW and its impacts right here in the USA, you will not find a better document. There are hundreds of very informative graphs, and careful easy to read explanations. It is written on a level that even a politician in congress could understand.

For more technical information, there are over 500 references in the bibliography, comprising the work of tens of thousands of scientists. I heartily invite you to track down any of those papers for more detailed information.

Because of the political nature of this document - out and out mortality predictions are to be inferred by the intelligent reader, by piecing the information together. However, all the pieces are there to show that many millions of Americans are projected to perish as a result of a “business as usual” scenario.

Some of the agencies involved are:
NASA
NOAA
NSF
EPA
Dept Interior
Dept of Defense
Dept of Energy
Dept of Health
Dept of Commerce
Dept of State
Office of the President

The home page of the U.S. Climate Change Science Program also has many other useful reports written on a non technical level.

climatescience.gov