Building a data culture in City Hall

Name: Harsha Mallajosyula Title: Chief Data Officer City: Paterson, N.J.

Infographic: The Mayors Challenge, by the numbers

Ever since its launch in 2013, the Bloomberg Philanthropies Mayors Challenge has empowered city leaders from around the world to tackle their most pressing concerns.

Mayors Challenge impact: A look back at previous winners

Here's how past winners of a one-of-a-kind ideas competition addressed their toughest challenges—and the impact they were able to create as a result.

Year in review: 5 bright spots in a difficult year

A year most city leaders would rather forget is winding down. It wasn’t all bad.

Medellín microlending program builds users’ savings

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