Our friends at Treehugger.com are always one step ahead in the eco news. Maybe they make it up, i dunno, but this story is from their site(but in my own words).
Here is a great way to advertise solar power, and an idea of how to power lights in the future. Its simple, yet I don't know why it isn't used more often. I've seen those construction signs that are solar powered (more often downtown London with the sinkhole signs), but I dunno why more billboards don't power themselves! i mean you've got an area higher than most buildings around and in most cases get 100% sunlight on good days. So lets see more of this!
Here is a great way to advertise solar power, and an idea of how to power lights in the future. Its simple, yet I don't know why it isn't used more often. I've seen those construction signs that are solar powered (more often downtown London with the sinkhole signs), but I dunno why more billboards don't power themselves! i mean you've got an area higher than most buildings around and in most cases get 100% sunlight on good days. So lets see more of this!
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