Worries about oil and gas hog the airwaves. But copper is also essential to keep the world running: It threads through your house, your computer, your eco-correct hybrid car. And it's getting just as difficult, expensive, and environmentally menacing as oil to extract. We have entered the era of tough ore.
Three bold plans to turn L.A. into a better, more sustainable version of itself, one that will be able to meet the formidable water, air, and climate challenges of the 21st century.