* I should add that in introducing the symposium he had graciously remarked that “there is no consensus on this view . . . much work remains to be done on climate change.” And then, to address the astronomically unlikely event that the greenhouse effect should turn out to be real, he offered a solution in the best tradition of Adam Smith: “It may also be possible to take advantage of the increasing commercial value of CO2 by capturing it from the combustion gases of power plants.”