Over half the population of the world live in urban areas. This means that efforts to meet human development goals and sustain economic growth must be concentrated in cities.

New research from the New Climate Economy finds that investing in public and low emission transport, building efficiency, and waste management in cities could generate savings with a current value of US$17 trillion by 2050.

This paper, a contribution to the New Climate Economy project, compares the opportunities or economically attractive low-carbon investment opportunities in five cities.