Infrastructure is a major problem for moving forward into any sort of vision of a new green economy.  This article in the New York Times is a little depressing.  The electrical transmission infrastructure simply isn't there to allow us to take full advantage of green energy generation technologies (e.g., wind farms or large solar arrays in deserts).  Let's hope that we can get serious about the substantial investments that need to be made to turn this country (and our world) around.  It might help if we could stop hemorrhaging money from ill-conceived wars.