Sydney Morning Herald: Julia Gillard’s stop-gap substitutes for Labor’s abandoned emissions trading scheme is unlikely to produce much reduction in emissions or be cost-effective. I reckon just about every economist would agree with that proposition, just as they’d agree with its corollary: the key to reducing emissions is to put a price on carbon. Yet the nation’s economists were neither unanimous nor active in supporting the Rudd government’s carbon pollution reduction scheme. Why weren’t they? Why …