What are risks of non-ionizing radiation? It's not true to say there are none, but why don't we know more? It all has to do with how new knowledge is created and disseminated. Whether people like the new knowledge is critical. In Plato's story of the cave the messenger who brought new knowledge was killed because people could not handle truth? Socrates likewise was killed... Eventually people come to understand and accept new knowledge and that is what we would call REAL progress. At one time, people thought microcomputers were impossible. Do you?