A healthy community is characterized not only by the absence of illness but by attributes that promote well-being and enable a high quality of life. While social policy and public and private investments are important contributors, the broad-based engagement of local people is also key. Across the US and globally, people are taking community-building into their own hands, bringing fresh produce to food deserts, demanding walking and bike paths, launching community apps, and advocating for public safety, access to health services, and clean water. Here is a look at how that work is getting done.