On Java, Indonesia’s most populous island, more than 30 million people suffer from coastal flooding and erosion driven by bigger storms and sea-level rise. There is hope: an ambitious mangrove restoration project is protecting villages while trapping carbon that drives climate change. Around the world, communities are deploying such nature-based solutions to adapt to climate impacts. Jonathan Cook, a WRI senior associate with the Global Commission on Adaptation, describes three steps to take these solutions to scale. Unlocking investment is key. Read more.