Given our alternatives, do you feel that the unencumbered use of coal is worth the costs? How can energy conservation (simply using less energy) help?...

Given our alternatives, do you feel that the unencumbered use of coal is worth the costs? How can energy conservation (simply using less energy) help? If you had to select one energy alternative, which would it be and why? Support your position with an outside reference that is written by an expert in that field (do not use wikipedia, about.com, or the like).