Few things in public discourse bug me as much as The Big Lie: We can get economic growth and energy/environment benefits in one stroke (or one free lunch).
Many politicians (including President Obama and Gov Schwarznegger and Mayor Villaraigosa, the ones to whom I send most of my tax dollars) cannot live with the hard (inconvenient) truth that if we want expensive technologies, there are sacrifices involved. The fantasy is routinely embraced by clueless journalists.
All of this is (and more) explained brilliantly in this paper.