A new report from the Coalition for Urban Transitions, supported by 50 leading institutions, shows that national governments that invest in low-carbon cities can enhance economic prosperity, make cities better places to live and rapidly reduce carbon emissions. The report finds that implementing low-carbon measures in cities would be worth almost US$24 trillion by 2050 and could reduce emissions from cities by 90%. Climate Emergency, Urban Opportunity (link) is the most comprehensive report to date to examine the critical role of national governments in achieving equitable and sustainable economic development in cities, which are home to over half the world’s population and which produce 80% of gross domestic product and three-quarters of carbon emissions.