Environment

Urban sidewalk shaded by large mature trees

Cool Walkability Planning

Shadeways (covered sidewalks) and pedways (enclosed, climate controlled walkways) can provide comfortable walkability in hot climates. The Cool Walkshed Index can help plan these facilities.

June 1, 2023 - Todd Litman

Looking up at giant sequoias in Mariposa Grove in Yosemite National Park at sunrise with sun's rays coming through trees

Public Lands in the United States, Part One: “Redeemed From Wilderness”

This is part one in a blog series examining the history of public lands in the United States and their shifting role in the American psyche.

May 31, 2023 - Diana Ionescu

View of wetlands in South Carolina at sunrise or sunset

Supreme Court Limits Clean Water Act’s Power

A recent ruling ‘dramatically’ restricts the law’s reach when it comes to protecting wetlands.

May 31, 2023 - Politico

Nighttime view of U.S. Capitol and blurred traffic on Pennsylvania Avenue

D.C. Residents Fight Light Pollution

New LED lighting has raised concerns about the health and environmental impacts of excessive or harsh lighting.

May 30, 2023 - Route Fifty

Aerial view of Atlanta BeltLine paved bike trail surrounded by green trees

Trees Beautify Segment of Atlanta’s BeltLine

A local nonprofit planted 500 trees along a previously unimpressive segment of the bike and walking trail, creating an ‘instant forest’ effect.

May 30, 2023 - Urbanize Atlanta

Line of 18-wheeler trucks on a highway in Tennessee

Biden's Truck Pollution Rule Hanging by a Thread

Four House Democrats joined all but one Republican to enact the Congressional Review Act to roll back President Biden's rule on heavy truck pollution approved by the EPA last December. The Senate had earlier narrowly passed the joint resolution.

May 30, 2023 - The Hill

View of Colorado River from top of Hoover Dam with concrete column on left

The New Colorado River Deal: An Explainer

According to one analyst, the agreement approved by the states doesn’t go nearly far enough to protect the river in the long term.

May 28, 2023 - The Land Desk

View of cars stuck in gridlocked traffic with traffic lights in background

Research Indicates the Large Potential Benefits of Parking Cash-Out Laws

‘Free’ employee parking increases driving. Parking cash-out laws reward commuters who use climate-friendly modes, which increases fairness and reduces traffic problems.

May 28, 2023 - An Assessment of the Expected Impacts of City-Level Parking Cash-Out and Commuter Benefits Ordinances

Close-up photo of Megan Kimble against blurry green background with title "A journalist's take on planning"

Through the Eyes of a Journalist: Megan Kimble Reflects on Covering Food Systems, Zoning Changes, and Highway Projects in the Southwest

Kimble’s interest in topics related to urban planning spawned from research and writing about food systems in the borderlands of Arizona. She then moved to Austin in the midst of the city’s update of its Land Development Code.

May 28, 2023 - The Planning Commission Podcast

Wind turbines sillhouetted against a sunset sky along roadway in New Mexico

New Power Transmission Line Approved in the Southwest

The proposed transmission line will transfer wind-produced power from New Mexico to cities in Arizona and California.

May 26, 2023 - U.S. News And World Report

"Bathtub ring" showing low water level on red rocks at Lake Powell, Arizona

States Reach Consensus on Colorado River Deal

The seven states along the Colorado River basin are in agreement over proposed water cuts over the next three years to preserve dangerously low reservoirs.

May 24, 2023 - Los Angeles Times

Vancouver Chuck Wolfe

Ten Signs of a Resurgent Downtown

In GeekWire, Chuck Wolfe continues his exploration of a holistic and practical approach to post-pandemic urban center recovery, anchored in local context and community-driven initiatives that promote livability, safety, and sustainability.

May 24, 2023 - GeekWire

Road sign with EXTREME HEAT ALERT surrounded by orange traffic cones

How Hot is Too Hot?

While they may not sound extreme, temperatures over 90 degrees can easily pose fatal risks and could have long-term impacts on public health.

May 23, 2023 - High Country News

View of Colorado River winding through canyon in red rock cliffs against lightly cloudy blue sky

Lower Basin States Closer to Agreement on Colorado River

After a year of contentious negotiations, Western states dependent on the river’s water supply are nearing a deal that would reduce water use significantly over the next three years.

May 22, 2023 - The Washington Post

Blue sign with white gas pump symbol with electric plug and "EV"

Plan for U.S.-Canada EV Corridor Announced

U.S. and Canadian officials revealed plans for an electric vehicle charging network that will connect Kalamazoo and Quebec City with EV chargers every 50 miles.

May 19, 2023 - Detroit Free Press

Late evening view of downtown Minneapolis skyline with stone bridge in foreground

Minneapolis to Begin Environmental Review in Response to 2040 Plan Lawsuit

After environmental groups sought to stop the city’s ambitious comprehensive plan, Minneapolis is looking for ways to resume its implementation.

May 18, 2023 - Minneapolis Star-Tribune

Pastoral landscape painting by Thomas Cole depicting pre-colonized idyllic scene

Planning for a Post-Climate World

A series of 19th century paintings that illustrates the rise and fall of empire highlights the limits of growth.

May 17, 2023 - Gabriel A. Ramos AICP

Solar panels on roof of grey residential building

HUD Announces Grants for Efficiency Retrofits in Multifamily Housing

A new program will fund solar panels, heat pumps, and other measures aimed at reducing emissions, improving air quality and resident health, and reducing heating and cooling costs.

May 16, 2023 - U.S. Department of Housing and Urban Development

White obelisk monument with Japanese writing at Manzanar Historic Site, former internment camp, California

Ten Parks and Sites for Asian American, Native Hawaiian, and Pacific Islander History

Learn more about some of the parks and historic sites that preserve and share the stories of Asian American, Native Hawaiian, and Pacific Islander people and communities in the U.S.

May 15, 2023 - The Wilderness Society

Aerial view of irrigation canal winding through Scottsdale, Arizona suburb with mountains in background

Mitigating the Environmental Footprint of Sprawl

There is still time to reverse the environmental outcomes of American suburbs. Researchers in Los Angeles, considered by many to be the poster child for U.S. sprawl, have been at work on the problem for years.

May 11, 2023 - Nature

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.

Professor of Urban Planning

Harvard University Graduate School of Design

Transportation Planner I

KFH Group Inc.

Director, Strategy and Research

Greater Baltimore Committee

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.