The changing face of single life

Miles from his frenetic San Francisco life, Ethan Watters discovered a new way of looking at being single. While hanging out in the Nevada desert, he saw his tight-knit group of city friends sitting around a campfire and realized they formed a tribe — an urban tribe.

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In a new book, "Urban Tribes: A generation redefines friendship, family and commitment," due out Wednesday, he outlines his ideas about clusters of friends who do everything from weekly dinners to fix-it projects together.

The author, a freelance writer in his late 30s, hopes his memoir-ish social commentary will spark conversation about the longer period of time people are spending single — to help create a picture of what it looks like to be unmarried into your 30s. Link