Cities have shown that a combination of adaptation measures and energy efficiency can save lives, improve well-being, reduce energy costs, and create conditions for sustainable growth. A new partnership seeks to help mayors and city leaders scale up these efforts through technical and financial assistance. By Michael R Bloomberg and Teresa Ribera

The war in the Gulf has unleashed powerful market forces that the rest of the world can harness to accelerate electrification and keep the Paris climate agreement's primary objectives on track. Doing so will not only mitigate climate change, but also strengthen economic resilience worldwide. By Murat Kurum