"Radio wave" is an engineering term - it just describes photons that we can detect and emit using a certain type of technology. It's a totally arbitrary categor

"Radio wave" is an engineering term - it just describes photons that we can detect and emit using a certain type of technology. It's a totally arbitrary category in a physical sense. What we're really talking about is photons with an energy up to about 10^-3 electron volts. My body is constantly radiating about 120 watts worth of photons, with energies up to about 10^-1 eV. I'm constantly glowing with non-ionizing radiation that I emit as a natural side-effect of living, producing vastly more energy than any wireless device you're likely to encounter. There's just no plausible mechanism by which a small quantity of low-energy photons could be more harmful than the far greater number of higher-energy photons you're exposed to in literally any environment compatible with human life. If you fear WiFi, you should be terrified of heat and light. Radio waves aren't a mysterious force summoned up by man, they're a tiny portion of the cacophony of electromagnetic radiation that we're exposed to by literally every speck of matter in the universe.