Diana is a writer and urbanist passionate about public space, historical memory, and transportation equity. Prior to joining Planetizen, she started and managed a farmers' market and worked as a transportation planner in the bike share industry. She is Planetizen's editor as of January 2022.

Evidence for Tolls as a 'Surefire' Traffic Congestion Fix
Traffic on a Louisville freeway fell by half after a toll was implemented. Could this be the best way to reduce traffic congestion?

Is Fare-Free Transit Worth Reduced Transit Service?
Transit advocates worry that the movement to eliminate fares will come at a high cost to transit-dependent riders who rely on frequent, reliable service to reach jobs and services.

Opinion: To Meet Climate Goals, Bay Area Needs More Transit-Oriented Development
The region's transit-oriented development (TOD) plan requires a significant update to achieve the density and housing goals laid out in the MTC's 30-year vision.

Report: U.S. Renewable Energy Production Rising Sharply
The proportion of energy produced by renewable sources in the United States has almost quadrupled in the last decade.

Debunking the Myth of the Declining White Population
Media claimed that Census data showed a sharp decline in America's white population, but the widely publicized figure reflects a misunderstanding of new data collection techniques.