September 13, 2017, 12pm PDT
According to this study, existing "leafy infrastructure" in ten of the world's largest cities confers an estimated $505 million in benefits. Planting more could magnify the effect.
August 17, 2017, 9am PDT
Changing the color of L.A. streets and growing out the urban canopy are part of a campaign to fight the heat island in and around Los Angeles.
March 17, 2017, 10am PDT
All that pollen in the air giving you the sneezes is probably because of all the male trees your city has been planting.
Greater Greater Washington
January 10, 2017, 8am PST
Treepedia is MIT's effort to collect a complete resource on the tree cover of city streets.
November 17, 2016, 12pm PST
A new report from the Nature Conservancy provides evidence of trees as a crucial component of public-health infrastructure.
November 13, 2016, 11am PST
The Washington Post Reports a small bit of good news regarding climate change, produced on the same day as a large heap of bad news regarding climate change.
August 30, 2016, 8am PDT
Some good news from a state that has seen far too much bad news this year: local officials report that the trees of New Orleans are making a surprisingly strong comeback after devastation wrought by Hurricane Katrina.
April 29, 2016, 2pm PDT
The Chicago Region Trees Initiative provides a regional model for planting and protecting a sustainable natural environment in and around cities and communities.
April 28, 2016, 8am PDT
The U.S. Forest Service has continued to refine the valuable i-Tree software program, which allows cities to calculate the benefits, in dollar figures, of the urban forest.
March 3, 2016, 1pm PST
As more and more people live on this planet, the pressure to build smart cities that feature environmentally sustainable infrastructure will become immense. Planners will be challenged to do more with less. Here's a discussion of this complex issue.
February 29, 2016, 5am PST
A tiny insect, native to Asia, has been killing trees in huge numbers around the United States since 2002. With the emerald ash borer expected to spread, cities are trying to prepare to combat the worst of the devastation.
January 29, 2016, 1pm PST
New research reveals more of the details of how trees provide therapeutic effects for humans.
October 29, 2015, 10am PDT
A surprising argument from an article in Seattle publication Crosscut this week: density is the mortal enemy of trees.
October 26, 2015, 12pm PDT
Citizens in developing corners of the world are prioritizing green infrastructure as they struggle to deal with the environmental consequences of rapid growth.
September 26, 2015, 9am PDT
New research suggests that trees offer a "layer of protection" for cardiovascular disease.
September 18, 2015, 5am PDT
The satirical site The Onion has been consistently roasting the contemporary conversation about urban living.
September 17, 2015, 5am PDT
A closer look at the data of a study revealing the number of trees on the planet shows several ways to compare and contrast the relative resources, in the form of trees, of countries around the world.
September 4, 2015, 9am PDT
A news study, combining satellite imagery and field study, dramatically increases the estimated trees in the world. What has not changed: how quickly humans are killing those trees off.
May 10, 2015, 7am PDT
A U.S. Forest Service survey has revealed the high costs of the California drought to one of the state's most treasured features: its sprawling forests.
April 26, 2015, 1pm PDT
The definition of blight may be in the eye of the beholder, but it may also be subconscious. Broken windows, abandoned buildings, and weed-filled yards may actually create stress and degrade health, according to a small study out of Philadelphia.