Almost 120 million children live in North America. Many of them face economic, social and environmental challenges every day. More children than ever need daily medication to control asthma. Others struggle to control aggressive outbursts and understand difficult learning concepts. Too many, particularly in poorer areas, suffer from gastrointestinal disease. Children who live with parents or others who smoke at home are exposed whenever a smoker lights up another cigarette. Many factors are affecting the health of these children.