Which form of electromagnetic energy is more damaging to tissues?
At lower frequencies than visible, infra red is not harmful, but then we come to microwaves which cause heating in tissues because they stimulate water molecules to vibrate and get hot. Beyond that, TV and Radio waves are not thought to be harmful, though I think the jury is still out on cellphones, the holding of one close to the brain while transmitting might be damaging, especially to children.
