I understand that radio waves have very low frequency, which means it is not ionizing as gamma and ultraviolet are, but while browsing the web, it seems that there are mixed point of views on its potential hazard to human health. Hmm, if it is dangerous, why? Does it have to do with intensity? What does intensity really mean? Does Intensity mean there are many radio waves focused at a single point? Can we impose light waves onto each other? Sorry for the bombardment of questions and thank you in advance PhysicsForums Community!!!