Ключевые слова: action, action month, activities, air, annual, awareness, background, banner, campaign, cancer, causes, celebrating, check, concept, dangerous, day, disease, environment, event, gas, global, happy, harmful, health, home, house, illness, illustration, importance, international, january, level, lung, month, national, observance, post card, poster, prevention, problem, protection, radiation, radon, symbol, testing, theme, usa, world, worldwide,