Scientists find that the Northwest's Douglas firs are susceptible to a spreading disease.
"The Northwest's Douglas firs -- synonymous with Christmas trees and lush evergreen forests -- are susceptible to a fast-spreading disease that's decimating oak trees in California, scientists announced yesterday. Researchers have found "sudden oak death" infecting Douglas firs in a small patch of trees in Northern California. It doesn't appear to kill the trees but withers new growth and can pass the disease to other vulnerable plants, such as huckleberries and certain rhododendrons."
Thanks to Erik Peter Axelson
FULL STORY: New disease infects Doug firs
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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.
New York City School Construction Authority
Village of Glen Ellyn
Central Transportation Planning Staff/Boston Region MPO
Institute for Housing and Urban Development Studies (IHS)
City of Grandview
Harvard GSD Executive Education
Regional Transportation Commission of Southern Nevada
Toledo-Lucas County Plan Commissions