Andrew McAfee of MIT's Sloan School of Management talks about his book, More from Less, with EconTalk host Russ Roberts. McAfee argues that technology is helping developed nations use fewer resources in producing higher levels of economic output. The improvement is not just a reduction in energy per dollar of GDP but less energy in total as economic growth progresses. This "dematerialization" portends a future that was unimaginable to the economists and pundits of the past. McAfee discusses the potential for dealing with climate change in a dematerialized world, the non-material aspects of economic progress, and the political repercussions of the current distribution of economic progress.