Air Quality
First study of NYC congestion zone’s air quality impact shows improvements
The study also examined air quality around freeways which experts worried would see increased traffic from people avoiding the tolls.
Report: 75% of NYC warehouses are in 'disadvantaged communities'
Low-income New Yorkers are 1.2 times more likely to live within half a mile of a warehouse.
Study: Airborne tire pollution is harmful to human health
Rubber particles that wear off tires combine with other chemicals to create harmful airborne pollutants.
Study: Pavement covers 40% of Phoenix
A new study reveals how ultrafine particles emitted by pavement worsen air quality.
NYC Congestion Pricing Revenue Will Fund up to 1,000 Hybrid Refrigerated Trucks
Traffic to the Hunts Point Produce Market causes increased rates of asthma in surrounding neighborhoods.
Downtown Salt Lake City Skyscraper Cleans the air Around it
The newly built Astra Tower filters air for its own residents and for the city.
Washington Urban Forestry Program Faces 'Existential' Budget Cut
A proposed budget eliminates funding for a key urban forestry program that funds greening efforts across the state.
EPA Guts Emissions Regulations
The agency is eliminating the endangerment finding that underpins the agency’s authority to regulate greenhouse gas emissions.
Zillow Deleted Climate Risk From California Listings. This Climate Expert Wants to Bring it Back.
While difficult to estimate for individual homes, experts argue that home buyers should have access to data about flood and wildfire risk, extreme heat, and other climate hazards in the area.
Dust From Exposed Great Salt Lake Bed Threatens Utah’s Air Quality
The lake ended 2025 with the third-lowest water level in a century.
EPA to Stop Considering the Cost of Lives Saved in Setting Pollution Limits
The agency will no longer quantify the monetary gains from health benefits from curbing air pollution.
Trump Administration Sues to Stop Gas Appliance Bans in California Cities, Citing ‘Crushing’ Costs
Some California cities have already retracted gas appliance bans after a judge ruled against Berkeley’s ordinance limiting gas-powered appliances in new buildings.
NYC Congestion Pricing Cut Air Pollution by 22% in 6 Months
The program reduced vehicle entries into the toll zone by 11 percent.
Seattle Conflict Between Trees and Housing Heats up
A 2023 update to Seattle’s tree ordinance has led to sharp increase in the number of trees being cut down for redevelopment, prompting advocates to call for better protection of the city’s tree canopy.
Even in California, Energy Affordability Trumps the Environment
A Democratic senator proposes to relax vehicle emissions standards in order to increase the supply of gasoline as the state's oil refinery capacity decreases, thus mitigating increases in gasoline prices in the state with the highest fuel prices.
Since Zion's Shuttles Went Electric “The Smog is Gone”
Visitors to Zion National Park can enjoy the canyon via the nation’s first fully electric park shuttle system.
‘Architectural Epidemiology:’ Centering Public Health in Urban Design
A new book asks, what if cities were designed around health equity?
Colorado Landfills Emit as Much Pollution as 1M Cars
Landfills are the third-largest source of methane pollution in Colorado, after agriculture and fossil fuel extraction.
House Moves to Rescind California’s Emissions Standards
The state has been allowed to set its own emissions goals, including a mandate to transition to electric or zero-emissions vehicles by 2035.
Driving Equity and Clean Air: California Invests in Greener School Transportation
California has awarded $500 million to fund 1,000 zero-emission school buses and chargers for educational agencies as part of its effort to reduce pollution, improve student health, and accelerate the transition to clean transportation.
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.
Harvard University Graduate School of Design
KFH Group Inc.
Greater Baltimore Committee
The Architects Foundation
University of Cincinnati Online
The Pocatello Development Authority
The Urban Renewal Agency of the City of Pocatello
