Trees

Where Los Angeles Most Needs Trees
Google has unveiled a new tool called Tree Canopy Lab in an effort to keep cities like Los Angeles cool by helping them to know where to plant more trees.

More Parks and Trees Can Increase Life Expectancy
New research shows that increasing park acreage in areas that face park deficits and low levels of tree canopy could lead to significant population-level increases in life expectancy.

How to Increase the Urban Canopy in Cities
Former University of Hawaii professor Tom Dinell makes a case for the need for more trees in Honolulu, with recommendations that can be applied in other cities as well.

A New Study Asserts the Importance of Urban Trees in Conservation Efforts
Data collected from 13 million tree planting records in 473 urban areas across 73 countries provides insight into the role of urban trees in biodiversity conservation.

Boston Launches a 20-Year Urban Forestry Plan
The forthcoming Boston Urban Forestry Plan is expected to support communities that have been disproportionately exposed to environmental stressors.

Addressing Equity by Strategically Planting Millions of Trees
As part of the Trillion Trees Initiative, cities across the country are pledging to plant trees and restore urban forests to fight climate change and cool off disadvantaged communities.

L.A.'s Pershing Square Headed for Redesign
The first phases of a plan to remake the downtown Los Angeles plaza into a more inviting, accessible public space are going to kick off soon.

The Environmental Consequences of the Arizona Border Wall
A segment of the planned U.S.-Mexico border wall would cut across the San Pedro River and threaten the area’s wildlife and plants.

The Ongoing Debate Over California's Eucalyptus Trees
The eucalyptus is an exotic species in California, and studies suggest it has contributed to an increase in wildfire hazards. But defenders of the trees say the eucalyptus is just an ecological scapegoat.

1,000 Football Fields Worth of Trees Lost in Philadelphia Over a Decade
Philadelphia's new "Tree Canopy Assessment" both records the damage of the past decade and makes the case for a new path forward when in comes to prioritizing the city's tree canopy.

Los Angeles Takes Steps to Grow Out Its Urban Forest
Los Angeles is rolling out a street tree inventory to complement other sustainability measures included in its own Green New Deal. The focus is on underserved neighborhoods.

The Importance of Urban Tree Canopies
Urban trees play an essential role in making cities livable and countering the effects of climate change.

Cleveland Launches Tree Replenishment Program
The city of Cleveland will hope to reap environmental and economic rewards by spending $1 million a year to regrow its tree canopy.

Playgrounds Could Provide Much-Needed Public Space
In communities lacking green space, public access to upgraded school playgrounds is a win-win solution.

Three Ways Cities Can Combat Extreme Heat
As temperatures rise, there are some relatively simple changes cities can implement to cut cooling costs and deal with spells of extreme heat.

Seattle Residents Wary of Urban Greening Efforts
Parts of the city desperately need more trees, but some residents worry about the long-term effects of tree planting in neighborhoods.

Debunking Anti-Tree Myths
Most of the reasons street trees are sometimes unpopular with residents are either untrue or can be mitigated.

Study: Not All Green Spaces Are Created Equal
Tree canopies deliver the most benefits to health and social outcomes to neighborhoods.

To Solve Climate Change: Plant a Trillion Trees
A new study suggests planting enough trees to cover a landmass the size of the United States.

Little Projects Make a Big Difference in American Downtowns
Alexander Garvin argues that it’s time for the end of the mega-project in an excerpt from "The Heart of the City: Creating Vibrant Downtowns for a New Century."
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