Wind turbines have, in recent times, attracted negative publicity in Australia with a number of people living near wind farms reporting health problems as a result of the constant low level noise emitted by the three-bladed turbines. Consequently a number of anti-wind farm groups have been formed to oppose their construction. See here for a report in The Australian over an ongoing court case, which details typical allegations raised over this divisive issue.
However a radically new Australian design called the Eco Whisper Turbine has been developed with increased efficiency and reduced noise in mind. Rated at a 20kW capacity, the turbine is 23 metres high with 30 blades extending out from a 6.5 metre radius from the hub — via redwolf.newsvine.com