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.

Philadelphia Traffic Calming Initiative Pays Off
City officials say serious crashes are down by 34 percent on streets that were the target of Complete Streets projects.

Florida High-Speed Rail Doubles Daily Trips
The Miami-to-Orlando Brightline rail is proving so popular that the company will start running 15 daily trips each way.

Solo Renters on the Rise Despite High Housing Costs
Between 2016 and 2021, the share of American tenants renting apartments and homes alone grew, with the fastest growth in Salt Lake City.

Office Vacancies at Federal Agencies as High as 75 Percent
Many federal agencies are sitting on underutilized buildings, causing a congressional committee to call into question the need for so much real estate.

The Importance of Dark Skies
Why light pollution harms humans and the environment.