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
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Southern California Water District Offers $100 Rebate for Planting Trees
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How Financing Restricts the Rental Housing Market
The way apartment buildings are financed has a major impact on supply and costs.
Houston Mayor Pauses Complete Streets Projects
The move raises concerns among road safety advocates who point out that traffic deaths continue to rise.
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