The Xiaolangdi dam on the Yellow River. Reversing its previous position, the World Bank sees big hydropower dams as a key source of energy for the developing world. Photo: AFP

World Bank U-turn brings hydropower in from cold

The World Bank is making a major push to develop large-scale hydropower projects around the globe, something it had all but abandoned a decade ago but now sees as crucial to resolving the tension between economic development and the drive to tame carbon use.