The article discusses the carbon emissions of London, England. Based on a report by BioRegional and the London Sustainable Development Commission, the carbon emissions of the city would double if the emissions from imported goods and services are included to its direct emissions. There is a possibility that if the mixed impacts of different carbon reduction measures occur by 2050, the carbon footprint can be cut by almost 90% while stabilizing the economy and improve the health of the people. The largest emitter came from households at 22%.