Air Quality

Close-up of white panel at top of school bus with "100% electric" black text.

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.

April 30, 2025 - California Air Resources Board

Man sitting on bench sillhouetted against golden hour trees in tranquil park.

‘Smart Surfaces’ Policy Guide Offers Advice for Building and Maintaining Urban Tree Canopies

Healthy, robust tree canopies can reduce the impacts of extreme heat and improve air quality.

April 30, 2025 - Smart Cities Dive

An engineer controlling a quality of water ,aerated activated sludge tank at a waste water treatment plant.

Judge Orders Release of Frozen IRA, IIJA Funding

The decision is a victory for environmental groups who charged that freezing funds for critical infrastructure and disaster response programs caused “real and irreparable harm” to communities.

April 18, 2025 - Smart Cities Dive

Aerial view of large warehouses across from development of suburban single-family homes in Jurupa, California with desert mountains in background.

New California Law Regulates Warehouse Pollution

A new law tightens building and emissions regulations for large distribution warehouses to mitigate air pollution and traffic in surrounding communities.

April 17, 2025 - Black Voice News

Silhouette of man holding on to back of bicycle ridden by woman with Eiffel Tower in background.

Paris Bike Boom Leads to Steep Drop in Air Pollution

The French city’s air quality has improved dramatically in the past 20 years, coinciding with a growth in cycling.

April 14, 2025 - Momentum Magazine

Colorful sunset view over Chattahoochee River in Georgia.

Comment: EPA Cuts will Send Atlanta Back to Eye-burning Ozone, Lung-damaging Smog, and Raw Sewage in the Chattahoochee River

A veteran political journalist takes stock of the hard-earned ground Georgia stands to lose with slashed environmental protection.

April 14, 2025 - Georgia Recorder

Blue and white Amazon trucks parked at loading docks at warehouse.

Poorest NYC Neighborhoods Pay Price for Delivery Boom

The rise of ‘last-mile’ e-commerce warehouses — and their attendant truck traffic and air pollution — is disproportionately impacting the most historically disadvantaged parts of the city.

April 3, 2025 - Inside Climate News

Close-up of open charging port with charging cable plugged in on yellow electric school bus.

Pittsburgh Rolls Out Electric School Buses

Pittsburgh Public Schools has launched its first electric school buses, with plans to fully electrify its fleet over the next 14 months, aiming to create a cleaner, more sustainable transportation system supported by new charging infrastructure.

March 31, 2025 - CBS Pittsburgh

Close-up of green ULEZ sign in London, UK.

Study: London ULEZ Rapidly Cleaning up Air Pollution

Expanding the city’s ultra low-emission zone has resulted in dramatic drops in particle emissions in inner and outer London.

March 10, 2025 - Smart Cities World

Aerial view of dense historic urban area of Bradford, United Kingdom.

Clean Air Zone Nets Health Authority Over £30K per Month

A new study links the zone to a 25 percent drop in GP visits for lung and heart conditions in its first year alone.

February 20, 2025 - The Guardian

View of downtown Los Angeles, California through orange haze.

Lawmakers Call for Improved Air Quality Monitoring in LA Following Fires

Wildfires like those in Los Angeles that destroy urban structures release toxic chemicals, including lead, into the air.

February 5, 2025 - Los Angeles Times

Aerial view of Bayway refinery in Elizabeth City, New Jersey.

New Jersey to Consider Charging Fossil Fuel Companies for Pollution

A proposed law would make companies liable for damages caused by burning fossil fuels.

December 18, 2024 - Fast Company

Apartment buildings surrounded by freeways in Laguna Niguel, California.

Balancing TOD and Public Health

Building housing near transportation networks can improve density and walkability, but can also have serious health consequences for residents.

November 26, 2024 - Next City

View looking up through large tree with blue sunny sky in background.

Improving South Los Angeles Through Strategic Tree Planting

The University of Southern California Urban Trees Initiative is planting 250 trees in South L.A. neighborhoods to improve shade, combat climate change, and enhance community well-being through collaboration and data-driven approaches.

November 25, 2024 - USC Today

Gaslamp Quarter

America’s 10 ‘Greenest’ Cities

A new analysis ranks cities based on their environmental quality, energy consumption and production, transportation, density, and other factors.

October 28, 2024 - The Street

Mature jacaranda trees full of purple blooms on street in Los Angeles, California.

Addressing Tree Canopy Disparity in South Los Angeles

A new study highlights the complex challenge of addressing tree canopy disparities in South L.A., where historical environmental injustices, budget constraints, and competing community priorities hinder efforts to increase equitable tree coverage.

October 21, 2024 - Los Angeles Times

Man in black and red jacket using backpack-mounted leaf blower on large pile of brown leaves.

Baltimore Bans Gas Leafblowers

The devices release as much air pollution as driving 1,100 miles and have been banned in over 100 U.S. cities.

October 17, 2024 - The Cool Down

Empty hallway lined with white tile in subway station in Philadelphia, Pennsylvania.

How Does Air Quality in a Philly Subway Station Compare to the Outdoors?

A team of researchers found much higher levels of particulate matter inside the City Hall subway station than on the street-level sidewalks directly above the station.

October 9, 2024 - The Conversation

Close-up of blue flame in gas-powered water heater.

Study: Building Pollution Contributing to Poor Air Quality in NYC

Pollutants from methane, propane, and fuel oil are on the rise, leading to a growing public health crisis.

October 1, 2024 - BK Reader

Houston Metro Bus

Houston Transit Agencies Offer ‘Free Fare Fridays’ for Ozone Action Month

Harris County is one of several Texas counties that failed EPA standards for clean air in recent years.

September 10, 2024 - Houston Public Media

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.

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The definitive ranking of graduate planning programs.

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A short list of voices on social, video, and podcasting platforms.