Use a lighter for Simple Wind direction indicator.
I don’t like the powders, but you could just use grass i guess. I just don’t want to add any scents like baby powder would.
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Silent rooftop wind turbines could generate half of a household’s energy needs
Please take a look at this. http://www.treehugger.com/wind-technology/silent-wind-turbines-could-generate-half-household-energy.html
