Air Quality

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

Distant view of brown oil pump jack in a flat desert with cloudy blue sky.

High Ozone Levels Threaten New Mexico Oil Town

The small community of Loving, New Mexico has higher ozone levels than dense cities like Los Angeles.

August 22, 2024 - KUNM

EVgo electric car charging station along Interstate 15 in California desert on the route to Las Vegas.

Appeals Court: California Emissions Standards Upheld

The U.S. Environmental Protection Agency and the California Air Resources Board, the nation's two most powerful environmental regulatory agencies, won an important round in federal court last week. But the emissions standards battle may not be over.

April 15, 2024 - San Francisco Chronicle

Paved walkway with a few people in lush green city park with large trees and benches.

WHO Resource Database Links Planning and Public Health

The directory aims to help governments and organizations improve planning practices to build healthier, more resilient communities.

March 21, 2024 - World Health Organization

Close-up of row of electric car charging stations in a covered garage structure

Study: How EVs Perpetuate the Harms of Car Culture

While they emit less pollution, electric cars don’t solve many urgent issues like sprawl and fine particulate pollution.

March 12, 2024 - Bloomberg CityLab

Hazy view of Interstate 5 freeway in Los Angeles, California.

Study: Air Pollution Disproportionately Impacts Communities of Color

The negative effects of poor air quality occur at higher rates in low-income neighborhoods and communities of color, according to new research.

March 7, 2024 - George Washington University

Two red combines harvesting corn in central California.

San Joaquin Valley Struggles to Lower Emissions

The San Joaquin Valley has some of the worst air pollution and particulate matter emissions in the nation, but agricultural sources are loosely regulated.

March 6, 2024 - Civil Eats

Elderly man and granddaughter standing on public bus.

Opinion: To Improve Health Outcomes, Invest in Public Transit

A medical student calls for improving public transit to boost the health of people and the environment.

March 3, 2024 - The Equation

Buffalo, New York

Buffalo Residents Push Back on Proposed Cap Park

State and local officials say the $1 billion project will heal neighborhoods divided by the Kensington Expressway, but community members say the proposed plan will exacerbate already poor air quality in the area.

February 23, 2024 - Bloomberg CityLab

IPhone with Redfin app open, sitting on top of tablet with Google Maps of Portland on the screen.

Redfin to Add Air Quality Data to Property Listings

As climate and wildfire risks grow, Redfin seems to think homeowners will soon be taking air quality scores into consideration when purchasing their next home.

February 19, 2024 - Fast Company

Looking up at a modern glass skyscraper with green tree next to it.

The Benefits of Trees

In addition to all the economically valuable services they provide, trees are beautiful as pure aesthetic objects and a welcome presence in any landscape.

February 19, 2024 - Corey Squire

Hazy sky with Portland, Oregon skyline barely visible in background. Man walking in foreground.

Report: 25 Percent of Americans Live With Poor Air Quality

Fires and extreme heat are generating more harmful particulate matter.

February 18, 2024 - Health Day

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.

Top Books

An annual review of books related to planning.

Top Schools

The definitive ranking of graduate planning programs.

100 Most Influential Urbanists

The who's who of urbanism, according to Planetizen readers.

Urban Planning Creators You Should Know

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