Why No Discussion Of Climate Change?

Not a word has been said in the presidential debates about what may be the most urgent and consequential issue in the world: climate change. President Obama understands and accepts the scientific consensus that the burning of fossil fuels is trapping heat in the atmosphere, with potentially catastrophic long-term effects. Mitt Romney's view, as on many issues, is pure quicksilver -- impossible to pin down -- but when he was governor of Massachusetts, climate-change activists considered him enlig...