Can a library save your life? Could public parks help address crime and addiction in your neighborhood? Think about libraries and churches and crowded subway trains – they’re shared spaces that can push all types of people together, playing a crucial role in civic life. Eric Klinenberg calls this phenomenon social infrastructure. And, while crumbling bridges and roads can mean the difference between life and death, so too, argues Klinenberg, can the crumbling of our social infrastructure.

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