Grist: I`m morbidly fascinated by the way conventional wisdom lags behind evidence, like the CW that renewable energy is expensive and fossil fuels cheap. In fact, there is a tectonic shift underway. Renewable energy prices are declining as technology improves, economies of scale kick in, financing mechanisms mature, and public policy begins to take some (inadequate) account of the negative externalities of fossil fuels. Meanwhile, the cost of coal-fired electricity is heading up. It`s getting harder to...