The tech side he covers as a contributor to Popular Mechanics and cleantech columnist for Sierra magazine, and the business side as a blogger for Forbes. Based in Washington, D.C., David has also worked as a newspaper reporter, a magazine editor, and managing editor of Matter Network, a news site dedicated to sustainable business. Most exciting development: In early 2013, he'll live in India for six months to cover the challenges of energy in the developing world. More. [74]