Those of you with strong stomachs will want to marvel at the contrast between two New York Times stories out today. Marvel ... and tear your fracking hair out. First, there's this story on energy efficiency. It makes the simple and familiar point that the cheapest, fastest source of energy is negawatts -- not using the energy in the first place. In particular, efficiency is cheaper than coal: 'When we started talking about this in 1990s in terms of energy efficien ...