LA Times: The drillers have gnawed through a mile of rock here, almost down to a 600-million-year-old layer of sandstone where they hope to bury about 1 million metric tons of carbon dioxide — equal to the annual emissions of 220,000 automobiles. The $84-million project, of which $66.7 million comes from the Energy Department, will help determine whether storing greenhouse gases underground, so-called sequestration, is a viable solution for global warming. The project by Archer Daniels …