It’s no mystery where that public money needs to be spent. Much of it should go to the kinds of ambitious emission-reducing projects already discussed—the smart grids, the light rail, the citywide composting systems, the building retrofits, the visionary transit systems, the urban redesigns to keep us from spending half our lives in traffic jams. The private sector is ill suited to taking on most of these large infrastructure investments: if the services are to be accessible, which they must be in order to be effective, the profit margins that attract private players simply aren’t there.
