Asahi Shimbun: Residents living near wind turbines are increasingly complaining of headaches, dizziness, insomnia and other ailments, sparking fears that the new energy source could pose a risk to public health. Although the cause of the problem remains unclear, the Environment Ministry is investigating the possibility that low frequency sounds produced by the turbines are to blame. The ministry is concerned that reports of ill health could spread as more wind turbines are built near …