A Discovery News report says that biologically based LEDs could be used to make trees illuminate sidewalks.
The golden glow of street lights could soon be replaced by the green fluorescence of tree leaves. Scientists from the Academia Sinica and the National Cheng Kung University in Taipei and Tainan have implanted glowing, sea urchin shaped gold nanoparticles, known as bio light emitting diodes, or bio LEDs, inside the leaves of a plant.
The new nanoparticles could replace the electricity powered street light with biologically powered light that removes CO2 from the atmosphere 24 hours a day.
As with many other green pipedreams, this one is, as the article says, "a long way away."
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A picture of my cave
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