Ozone, a pollutant or a gas to protect us? We have known that the ozone layer absorbs (slides 12 to 16) most of the sun's ultraviolet light, which is potentially damaging to life on earth. At the same time, we have heard that ozone pollution (slides 25-28) is pretty significant in urban areas like l.A. So ozone is good or bad? Elaborate your answers by using what you've learned so far.