A new study builds an even stronger case for setting pollution controls at PM 2.5 to prevent increased risk of diabetes. The EPA's clean air regulations set a threshold much less restrictive than that level.

Olga Khazan reports: "It’s fairly well known that a bad diet, a lack of exercise, and genetics can all contribute to type 2 diabetes. But a new global study points to an additional, surprising culprit: the air pollution emitted by cars and trucks."
The study, published in the journal Lancet Planetary Health, builds on previous research with a larger study and additional controls (more on the methodology is included in the article). "What’s more, it also quantifies exactly how many diabetes cases in the world are attributable to air pollution: 14 percent in 2016 alone. In the United States, it found, air pollution is responsible for 150,000 cases of diabetes," according to Khazan.
The findings of the report suggest that current U.S. clean air regulations don't go far enough. Despite that concern, Khazan adds in more detail, the Trump Administration is moving in the opposite direction on clean air regulations.
FULL STORY: A Frightening New Reason to Worry About Air Pollution

Rethinking Redlining
For decades we have blamed 100-year-old maps for the patterns of spatial racial inequity that persist in American cities today. An esteemed researcher says: we’ve got it all wrong.

Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

Walmart Announces Nationwide EV Charging Network
The company plans to install electric car chargers at most of its stores by 2030.

New State Study Suggests Homelessness Far Undercounted in New Mexico
An analysis of hospital visit records provided a more accurate count than the annual point-in-time count used by most agencies.

Michigan Bills Would Stiffen Penalties for Deadly Crashes
Proposed state legislation would close a ‘legal gap’ that lets drivers who kill get away with few repercussions.

Report: Bus Ridership Back to 86 Percent of Pre-Covid Levels
Transit ridership around the country was up by 85 percent in all modes in 2024.
Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
City of Moorpark
City of Tustin
City of Camden Redevelopment Agency
City of Astoria
Transportation Research & Education Center (TREC) at Portland State University
Regional Transportation Commission of Southern Nevada
Toledo-Lucas County Plan Commissions