Quite possibly living proof that electromagnetic radiation
http://en.wikipedia.org/wiki/Electromagnetic_radiation

can do us great harm...
Left-sided Cancer: "Thus, as we sleep on our coil-spring mattresses, we are in effect sleeping on an antenna that amplifies the intensity of the broadcast FM/TV radiation. Asleep on these antennas, our bodies are exposed to the amplified electromagnetic radiation for a third of our life spans."
http://www.scientificamerican.com/blog/post.cfm?id=left-sided-cancer-blame-your-bed-an-2010-07-02
http://www.mercola.com/article/emf/emf_dangers.htm
http://antiradiation.org/computer-radiation-is-harmful/