In his acclaimed book Bowling Alone, Robert Putnam describes the United States as a nation in which we have become increasingly disconnected from one another, where our social structures have disintegrated. He asks an important question: what can we do to end the atrophy of America's civic vitality, and what can bring us together again?

Now, in Better Together, Putnam and Lewis Feldstein examine how people across the country are inventing new forms of social activism and community renewal. An arts program in Portsmouth, New Hampshire, brings together shipyard workers and their gentrified neighbors; a deteriorating, crime-ridden neighborhood in Boston is transformed by a determined group of civic organizers; an online community in San Francisco allows its members to connect with each other; in Wisconsin schoolchildren learn how to participate in the political process to benefit their town.

As our society grows increasingly diverse, it's more important than ever to grow social capital, whether by traditional or more innovative means. The people profiled in Better Together are doing just that, and their stories illustrate the extraordinary power of social networks for enabling people to improve their lives and the lives of those around them.