Researchers in Taiwan have discovered that gold nanoparticles can create luminescence in tree leaves, opening the possibility of glowing trees that cold act as streetlights.
This research could create an energy-efficient way to light streets.
"Upon learning of the discovery, Assistant Prof. Shih-Hui Chang said: 'Light emitting diode (LED) has replaced traditional light source in many display panels and street lights on the road. A lot of light emitting diode, especially white light emitting diode, uses phosphor powder to stimulate light of different wavelengths. However, phosphor powder is highly toxic and its price is expensive. As a result, Dr. Yen-Hsun Wu had the idea to discover a method which is less toxic to replace phosphor powder which can harm human bodies and cause environmental pollution. This is a major motivation for him to engage in the research at the first place.'"
FULL STORY: Gold nanoparticles turn trees into streetlights
The Urban Heat Divide: Addressing LA’s Thermal Inequities
LA's thermal inequities leave low-income, minority neighborhoods disproportionately hotter and more vulnerable, prompting advocacy and policy efforts to address these disparities through green infrastructure and equitable climate investments.
Fighting Forest Pests With AI: A Hemlock Success Story
Fairfax County utilized GeoAI and ArcGIS technology to efficiently map and protect its hemlock trees from the invasive woolly adelgid, ensuring targeted pest management and preservation of its evergreen canopy.
How AI Is Revolutionizing Urban Forestry and Climate Resilience
Tree-D Fusion, an AI-driven tool developed by MIT and Purdue researchers, generates 3D models of urban trees to help city planners visualize future green spaces, address climate challenges, and enhance urban livability and sustainability.
How the Trump Presidency Could Impact Urban Planning
An analysis of potential changes in federal housing, transportation, and climate policies.
Midburbs: A New Definition of Suburbs
When the name “suburb” just doesn't quite fit.
Why Aren’t There More Bollards in US Cities?
Solid barriers, like the dormant ones in New Orleans, are commonly used to improve road safety in Europe. Why not here?
Menlo Park to Develop Parking Lots Into Housing
The city will issue a request for proposals to build subsidized housing on up to three downtown parking lots.
What Has Measure ULA Achieved?
Los Angeles has imposed an additional tax on luxury home sales to generate millions for housing efforts in the city. Shelterforce checks in on where the money has gone, and what’s to come.
London Congestion Pricing Zone Has No Impact on Local Spending
The city’s cordon pricing scheme did not affect how much people spent at local businesses, new research finds.
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.
Roaring Fork Transportation Authority
Placer County
Skagit Transit
Harvard GSD Executive Education
Chaddick Institute at DePaul University
HUDs Office of Policy Development and Research
M-NCPPC Prince George's County Planning Department
HUDs Office of Policy Development and Research
NYU Wagner Graduate School of Public Service