LA Times: The push to produce more energy from renewable sources has stalled, and "the average unit of energy produced today is basically as dirty as it was 20 years ago,' according to Maria van der Hoeven, executive director of the International Energy Agency, a Paris-based intergovernmental organization that researches the energy sector and holds reserves of oil in case of supply disruptions. Van der Hoeven's statement pointed to the amount of carbon dioxide emitted by the world's power plants, the greatest...