Brown’s upcoming visit to Beijing will focus on keeping up the COP21 Paris accords momentum Trump wants to radically reverse. California’s aggressive stance on pollution controls and environmental standards will be highlighted. The governor wants to make a lasting difference in the world. [...] California’s interest and right to combat climate change and seek China’s support is understandable and has precedent. But what’s in it for China?

A year after COP21 and the adoption of the Paris Agreement, international policymakers are still struggling to convert targets into action. This is clearly indicated by the title of the recent followup COP in Marrakech: Turn the Promise of Paris into Action. But as the international community putters along, cities and local communities are already staking out the front lines of the fight against climate change.