Extreme Heat

View of Los Angeles skyline at sunrise with yellow and green trees in foreground

LA’s Trees Absorb More Carbon Than Expected, But Can’t Do It Alone

A USC study finds that Los Angeles’ urban trees absorb more carbon than expected, but while they provide crucial environmental benefits, they cannot replace the urgent need for systemic emissions reductions.

February 28, 2025 - Phys.org

Aerial view of residential buildings in Koreatown, Los Angeles with downtown skyline in background

The Urban Heat Divide: Addressing LA’s Thermal Inequities

LA's thermal inequities leave low-income, minority neighborhoods disproportionately hotter and more vulnerable, prompting advocacy and policy efforts to address these disparities through green infrastructure and equitable climate investments.

January 21, 2025 - Los Angeles Downtown News

Large trees on either side of wide suburban street.

How AI Is Revolutionizing Urban Forestry and Climate Resilience

Tree-D Fusion, an AI-driven tool developed by MIT and Purdue researchers, generates 3D models of urban trees to help city planners visualize future green spaces, address climate challenges, and enhance urban livability and sustainability.

January 13, 2025 - Wood Central

Sun seen through red wildfire sky and smoke.

Key Climate and Health Issues to Watch in 2025

The escalating health impacts of climate change, from extreme heat to sea level rise, highlight the urgent need for integrated medical education, proactive communication, and sustainable policy solutions to protect public health.

January 13, 2025 - Association of Health Care Journalists

Bus stop with agave mosaic in Phoenix, Arizona.

Phoenix Shade Plan Focuses on Bus Stops

The city’s updated Shade Master Plan calls for trees and built structures at bus stops to protect residents from heat.

January 9, 2025 - Smart Cities Dive

View from back of classroom of young children at desks raising hands.

New York Law Addresses Extreme Heat in Schools

The law calls for heat mitigation measures when temperatures exceed 88 degrees.

December 29, 2024 - WBEN

Small trees on city sidewlak with glass buildings in background.

Cities Prioritize Urban Reforestation to Combat Heat and Revitalize Communities

Cities like Phoenix, Chicago, and Boise are prioritizing urban reforestation as critical green infrastructure to combat extreme heat, address environmental inequities, and foster community revitalization.

December 20, 2024 - USGBC

Public stairs in Los Angeles, California painted with rainbow and red hearts.

A Framework for Inclusive Tree Planting in Los Angeles

The Los Angeles Urban Forest Equity Collective has developed an equity-centered tree-planting framework and toolkit to address historic underinvestment and mitigate extreme heat in vulnerable neighborhoods.

December 10, 2024 - UCLA Luskin Center for Innovation

Phoenix, Arizona skyline with mountains in background.

Phoenix Announces Shade Action Plan

The city has outlined 11 strategic priorities aimed at addressing the risks of extreme heat and protecting vulnerable residents from its impacts.

November 22, 2024 - Environmental Energy Leader

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

Quantifying How Urban Trees Cool Cities

A new tool can help cities understand the benefits of tree planting efforts at the municipal scale.

November 7, 2024 - Phys.org

Woman in exercise clothes walking on sidewalk against large wall with mural in Phoenix, Arizona.

Research Shows Cool Pavement Coatings Can Raise Ambient Temperature

Coatings that reflect heat can make the air feel warmer for people standing on and around these surfaces.

October 29, 2024 - Smart Cities Dive

Large trees on street in Las Vegas at night.

Urban Trees Have Bigger Impact in Hot, Dry Cities

The cooling effect of robust urban tree canopies is more pronounced in hotter, drier cities like Phoenix and Las Vegas.

October 22, 2024 - U.S. Geological Survey

WMATA bus stop with sign and no bench or shelter in Washington, D.C.

DC’s Hottest Neighborhoods Have the Least Shade

Areas most exposed to extreme heat also tend to lack bus shelters and benches at bus stops.

October 4, 2024 - Greater Greater Washington

Wildfire burning under power transmission towers and large trees at night.

Intense October Heat Wave Raises Fire Risk in California

Unusually high temperatures across the state are prompting power shutoffs and could fuel more destructive wildfires.

October 3, 2024 - Los Angeles Times

Close-up over shoulder of person holding smartphone with extreme heat warning and 105 degree temperature indicated.

Experts Call for Extreme Heat Action Plans as Communities Face Growing Risks

Experts are urging cities and counties to develop heat action plans and personalized heat warnings as extreme heat becomes a leading cause of climate-related deaths.

September 29, 2024 - NBC Los Angeles

Aerial view of green roof on Chicago Cultural Center.

HUD Issues Extreme Heat Playbook

The guide contains actionable steps local and state governments can take to protect vulnerable residents from the impacts of extreme heat.

September 25, 2024 - U.S. Department of Housing and Urban Development

Close-up of red EMERGENCY sign above hospital emergency room entrance.

Study: Heat Deaths on the Rise, Predicted to Increase

As intense heat waves become more common, the risk of heat-related deaths is rising.

September 23, 2024 - JAMA Network Open

Trees in a schoolyard.

Green Schoolyards Offer Respite From Urban Heat

More schools are transforming asphalt-covered playgrounds into shady oases that help reduce temperatures and absorb emissions.

September 18, 2024 - La Voce di New York

Green highway sign with white text with distances for Palmdale, Lancaster, and Los Angeles, California.

Rising Heat Threatens Growing California Cities

Many rapidly growing inland California cities are facing increased extreme heat days due to climate change, putting more residents at risk of health issues and overwhelming local infrastructure.

September 9, 2024 - Cal Matters

Worker in safety vest leaning over expressing heat exhaustion standing next to orange shipping container.

Protecting Indoor Workers from Extreme Heat

California has introduced new standards to protect indoor workers from extreme heat, requiring cool-down areas and cold water in workplaces like car washes and warehouses.

August 30, 2024 - Yale Climate Connections

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.