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. Life

    Who’s Really Buying Property in San Francisco?

    A lot of software developers, according to an unprecedented new analysis.

  2. a rendering of the moon village with a view of Earth
    Design

    Designing the First Full-Time Human Habitat on the Moon

    SOM, in partnership with the ESA and MIT, wants to accommodate research and maybe even tourism on the moon.

  3. Transportation

    Will Ottawa Ever Get Its Light Rail?

    Sinkholes, winter-weary trains, and political upheaval have held the Confederation Line light-rail transit back from a seriously overdue opening.

  4. Maria Romano stands behind one of her three children, Jennifer, 10, as she gets something to eat in their Harlem apartment in New York Thursday, June 3, 2005
    Equity

    Why HUD Wants to Restrict Assistance for Immigrants

    A proposal by Ben Carson’s agency would eject immigrant families from public housing to make way for the "most vulnerable." Housing advocates aren't buying it.

  5. Transportation

    Electric Scooters Aren’t a Transportation Revolution Yet

    New data show a staggering rise in shared dockless e-scooter use nationwide. But commuting habits have seen little change since the dawn of micromobility.