When people talk green, they usually are referring to alternative energy, sustainability, but never about noise pollution. I feel that too much man-made stuff is noisey. Besides the devil incarnate, the leaf blower, there are quite a few other noisey items in our households..
[in no particular order]
1) lawn mower
2) vaccuum cleaner
7) vehicles (cars, trucks, motorcycles, buses) ...ok not too many people have buses in their households :)
8) tools (drills, saws)
Have any companies addressed these noisey items? I keep saying if I invent the quiet leaf blower, I'll be a billionaire!
I do know there are companies focusing on quiet computers, such as www.quietpc.com which sells all sorts of quiet components and audio dampening materials.