1. Power consumption per person versus population density, in 2005.
Power consumption per person versus population density, in Point size is proportional to land area. Line segments show 15 years of ‘progress’ (from 1990 to 2005) for Australia, Libya, the USA, Sudan, Brazil, Portugal, China, India, Bangladesh, the UK and the Republic of Korea. Seventy-eight per cent of the world's population live in countries that have a power consumption per unit area greater than 0.1 W m−2. (Online version in colour.)‏
MacKay D J C Phil. Trans. R. Soc. A 2013;371:
©2013 by The Royal Society