Trees are more than decoration — they’re living economic assets, with measurable costs and benefits for cities and neighborhoods. Zachary Crockett takes a walk on the shady side of the street.

SOURCES:
- Geoffrey Donovan, owner of Ash & Elm Consulting.
- Jana Dilley, urban forester for the city of Seattle.
- Kathleen Wolf, social scientist, former researcher at the University of Washington.

RESOURCES:
- "Extreme Heat Is Worse For Low-Income, Nonwhite Americans, A New Study Shows," by Deepa Shivaram (NPR, 2021).
- "US Urban Forest Statistics, Values, and Projections," by David Nowak and Eric Greenfield (Journal of Forestry, 2018).
- "The role of trees in urban stormwater management," by Adam Berland, Sheri Shiflett, William Shuster, Ahjond Garmestani, Haynes Goddard, Dustin Herrmann, and Matthew Hopton (Landscape and Urban Planning, 2017).
- "Urban trees and the risk of poor birth outcomes," by Geoffrey Donovan, Yvonne Michael, David Butry, Amy Sullivan, and John Chase (Health & Place, 2011).
- "Calculating the Green in Green: What's an Urban Tree Worth?," by Gail Wells (Science Findings, 2010).
- "The Effect of Trees on Crime in Portland, Oregon," by Geoffrey Donovan and Jeffrey Prestemon (Environment and Behavior, 2010).

EXTRAS:
- i-Tree Tools.

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