The people living in urban heat islands are much more likely to be inhabited by low-income people of color, and the roots of the environmental justice issue can be found in planning history.
Kale Williams shares news of a new study that connects urban heat islands (areas where temperatures are exacerbated by the built environment) to a history of racist land use regulations.
Now, a new study from Portland State University is showing, for the first time, that areas prone to excessive heat are disproportionately populated by low-income communities and people of color due to racist housing policies that stretch back more than a century.
Williams summarizes more of the study's findings:
Nearly every city included in the study saw higher temperatures in neighborhoods that were historically subject to discriminatory housing policies, with poorer areas seeing averages temperatures about five degrees higher than their wealthier counterparts. And, of the 108 urban areas analyzed, Portland came in with the worst temperature discrepancy between rich and poor, a difference of almost 13 degrees.
Jeremy S. Huffman, Vivek Shandas, and Nicholas Pendleton wrote the study, which was published in the Climate journal.
Read the full story: Historically racist housing policies exacerbating climate change effects in low-income Portland neighborhoods
Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.
California plans to bury El Niño’s downpour
If the state plays its cards right, it may be able to store a billion acre-feet of El Niño’s water in aquifers.
Desperate measures: Advocates weigh draining Lake Powell to fill Colorado River
Draining the reservoir could reduce evaporation losses by a couple hundred thousand acre-feet.
Chicago Avenue bridge construction delays enrages city leaders
The bridge has been closed since 2025. The city originally aimed to re-open it in December, and now expects to finish construction in 2027.
NYC bus network redesign speeds up Queens buses
Rush routes have seen a 4.6% speed increase after the redesign.
California High-Speed Rail Authority picks trainset manufacturer
The California High-Speed Rail Authority aims to start servicing passengers by 2033.
FREE Course: Walkable City 1: Why Walkability?
After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.
Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold
The course focuses on the opportunities and imperatives that shape reinvention of mall sites.
City of Rosemead
Rutgers University, Edward J. Bloustein School of Planning and Public Policy
One Hundred Miles
Hunter College, City University of New York (CUNY)
The Architects Foundation
University of Cincinnati Online
City of Cambridge
Montrose County
The Pocatello Development Authority