Are cellphones and Wi-Fi dangerous?

Good answers from a recent Fluther question – Do cell-phones have more positive effects than negative effects?

As far as the dangers of Wi-Fi? I’ve never heard of any before.

No. With a caveat. RF radiation is non-ionizing radiation. It won’t give you cancer but it can be dangerous. The key to RF safety is distance and when talking on your cell phone you need to keep it ~ an inch away from your head. This was no issue with the old “clamshell” phones but is more of a concern with smartphones. Unless you have the router antenna strapped to your head or vital organs there is zero danger. RF (radio) obeys the inverse square law so when in doubt create some distance.