Commemorate the 51st World Environment Day with this curated list of Planetizen articles highlighting research and projects that promote a healthier, more sustainable world.

It’s World Environment Day, a global celebration that has been held annually on June 5 since 1973. According to its official website, “World Environment Day is a global platform for inspiring positive change. People from more than 150 countries participate in this United Nations international day, which celebrates environmental action and the power of governments, businesses and individuals to create a more sustainable world.” This year the event is being hosted by Saudi Arabia with a focus on land restoration, desertification, and drought resilience.
In honor of this global commemorative date, Planetizen’s editors have pulled together a roundup of recent articles highlighting studies and initiatives in cities and rural communities across the United States aimed at protecting and enhancing environmental and public health.
Here’s a list of recent headlines highlighting inspiring environmental research and projects:
- Planting for the Future: The Urban Trees of Tomorrow
- WHO Resource Database Links Planning and Public Health
- Planting Trees Where They are Most Needed
- The Benefits of Trees
- Regenerating and Healing Land Through Parks
- Sibling Study Highlights Impact of Green Neighborhoods on Public Health
- The Future of Federal Funding for Green City Initiatives
- Transforming Landfills into Parks
- The Promise of Urban Food Forests
- Rewilding the Golf Course
- New Documentary Highlights Regenerative Agriculture and Climate Change
- Latest Trends in Parks and Recreation
- Rochester Updating Urban Forest Master Plan
- Planning for Trees in Los Angeles
- San Francisco's Presidio Earns Fifth 'Green Flag' Award
- Tree Folio NYC Aims to Monitor Urban Forest in Real Time

Study: Maui’s Plan to Convert Vacation Rentals to Long-Term Housing Could Cause Nearly $1 Billion Economic Loss
The plan would reduce visitor accommodation by 25,% resulting in 1,900 jobs lost.

North Texas Transit Leaders Tout Benefits of TOD for Growing Region
At a summit focused on transit-oriented development, policymakers discussed how North Texas’ expanded light rail system can serve as a tool for economic growth.

Why Should We Subsidize Public Transportation?
Many public transit agencies face financial stress due to rising costs, declining fare revenue, and declining subsidies. Transit advocates must provide a strong business case for increasing public transit funding.

How to Make US Trains Faster
Changes to boarding platforms and a switch to electric trains could improve U.S. passenger rail service without the added cost of high-speed rail.

Columbia’s Revitalized ‘Loop’ Is a Hub for Local Entrepreneurs
A focus on small businesses is helping a commercial corridor in Columbia, Missouri thrive.

Invasive Insect Threatens Minnesota’s Ash Forests
The Emerald Ash Borer is a rapidly spreading invasive pest threatening Minnesota’s ash trees, and homeowners are encouraged to plant diverse replacement species, avoid moving ash firewood, and monitor for signs of infestation.
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.
City of Santa Clarita
Ascent Environmental
Institute for Housing and Urban Development Studies (IHS)
City of Grandview
Harvard GSD Executive Education
Toledo-Lucas County Plan Commissions
Salt Lake City
NYU Wagner Graduate School of Public Service
