Parents in Maryland are fighting Wi-fi in their child's school. Their child, and many other children, became ill after an upgrade to the Wi-fi network in their school. Their child was diagnosed with Electrical Hypersensitivity. Symptoms of Electrical Hypersensitivity include severe headaches, skin symptoms including prickling and burning sensations and rashes, fatigue, stress, sleep disturbances, muscle aches, nausea, nose bleeds, dizziness and heart palpitations. Here is a link to an article about their fight. For more information on Electrical Hypersensitivity visit the EMF safety network here. For more details and references on electromagnetic radiation sources and health effects check out this report Wi-fi in Schools Radio Frequency Radiation Health Risks with facts from all over the world on health impacts, and calls for tighter regulation.