A trip back to Sheffield, Alabama, is filled with reminders that boundaries aren't just physical.

Throughout this week, CityLab is running a series on borders—both real and imagined—and what draws so many of us to places on the edge.

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  1. a photo of a tiny house in Oregon
    Design

    How Amazon Could Transform the Tiny House Movement

    Could the e-commerce giant help turn small-home living from a niche fad into a national housing solution?

  2. An aerial photo of downtown Miami.
    Life

    The Fastest-Growing U.S. Cities Aren’t What You Think

    Looking at the population and job growth of large cities proper, rather than their metro areas, uncovers some surprises.

  3. Charts

    The Evolution of Urban Planning in 10 Diagrams

    A new exhibit from the San Francisco Planning and Urban Research Association showcases the simple visualizations of complex ideas that have changed how we live.

  4. Environment

    What U.S. Cities Facing Climate Disaster Risks Are Least Prepared?

    New studies find cities most vulnerable to climate change disasters—heat waves, flooding, rising seas, drought—are the least prepared.

  5. Transportation

    When a Transit Agency Becomes a Suburban Developer

    The largest transit agency in the U.S. is building a mixed-use development next to a commuter rail station north of Manhattan.

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