Gigahertz Solutions is a manufacturer of good quality EMF meters, shielded cables and demand switches, from Germany.
PowerWatch is a group involved in the discussions about the effects of electromagnetic radiation on human health and other living beings. They report remarkable information, especially for UK and north Europe.
ElectricSense is a blog about the problem of electromagnetic radiation generated by cell phones, wireless devices, CFL lamps, and other electronic products. It provides a lot of articles, videos, and links, with many stories of real people. Very worth to read to understand these problems.
Dr Magda Havas from University of Toronto is one of the few academic people who is warning governments about the health problems that many types of electromagnetic radiation cause to people today. She has made many videos to explain the effects of EMF.