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

Trump Administration Could Effectively End Housing Voucher Program
Federal officials are eyeing major cuts to the Section 8 program that helps millions of low-income households pay rent.

Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

Canada vs. Kamala: Whose Liberal Housing Platform Comes Out on Top?
As Canada votes for a new Prime Minister, what can America learn from the leading liberal candidate of its neighbor to the north?

Washington State’s Parking Reform Law Could Unlock ‘Countless’ Acres for New Housing
A law that limits how much parking cities can require for residential amd commercial developments could lead to a construction boom.

Wildlife Rebounds After the Eaton Fire
Following the devastation of the Eaton Fire, the return of wildlife and the regrowth of native plants are offering powerful signs of resilience and renewal.

LA to Replace Inglewood Light Rail Project With Bus Shuttles
LA Metro says the change is in response to community engagement and that the new design will be ready before the 2028 Olympic Games.
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