Streetlight or Treelights?

Taiwanese researchers have found a way to make tree glow with sunnylight. The trees are implanted with gold nanoparticles that makes it leaves glow like the sun.

This is a good option to reduce the pollution on the street, reduce to much light and cause trees to absorb more Carbon Dioxide.

http://www.popsci.com/technology/article/2010-11/trees-could-one-day-serve-streetlights-thanks-gold-nanoparticles
http://www.rsc.org/Publishing/ChemTech/Volume/2010/11/leaves_glow.asp