Initial thoughts on WiFi dangers

I thought that this was an interesting article on the dangers of WiFi. I'm around wireless radiation constantly through the day, so this is the start of a topic that I've been researching. Just because the FDA gives it's good blessing on the safety of WiFi and radio frequency radiation, doesn't mean I'm convinced it's completely safe. But then again, these days WiFi is nearly inescapable, and even if you had no wireless broadband/cell radiation in your house, your neighbors are sure to. And look outside the window and there's bound to be a cell tower not far from view.
Even living in remote places in the country you can't escape some sort of satellite radiation. Maybe it's harmless, but my thinking is, the technology is so new, how can they know for sure at this point?