At the same time, we do not need an endless stream of new models in order to take effective actions. There are enormous opportunities for reducing energy use in buildings, transportation, industry, and agriculture, and we should have initiated some of these energy-saving and emissions-reducing measures decades ago, regardless of any concerns about global warming. Quests to avoid unnecessary energy use, to reduce air pollution and water, and to provide more comfortable living conditions should be perennial imperatives, not sudden desperate actions aimed at preventing a catastrophe.
