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.
LA’s Tree Emergency Goes Beyond Vandalism
After a vandal destroyed dozens of downtown LA trees, Mayor Karen Bass vowed to replace them. Days later, she slashed the city’s tree budget.
Sacramento Leads Nation With Bus-Mounted Bike Lane Enforcement Cameras
The city is the first to use its bus-mounted traffic enforcement system to cite drivers who park or drive in bike lanes.
Seattle Voters Approve Social Housing Referendum
Voters approved a corporate tax to fund the city’s housing authority despite an opposition campaign funded by Amazon and Microsoft.
The Five Most-Changed American Cities
A ranking of population change, home values, and jobs highlights the nation’s most dynamic and most stagnant regions.
USDOT Repeals Emissions Monitoring Rule
A Biden-era regulation required states to report and plan to reduce transportation-related emissions.