I think that most people want to get involved and want to be part of the solution but are not really sure how. At this point no one can answer that definitively and most people who say they can want to sell you the solution. Although I know I could have a real impact by moving to within walking distance of work and avoiding all air travel it is unlikely I ill do that.
One thing that seems clear is that all recreational fuel consumption, NASCAR and the like should be the first thing to go.