 Learn about the issues affecting your health and well-being this week on Radio Health Journal. Sunday morning at 7.30. More than 80 million Americans depend on AM radio for their news, traffic, weather, sports, and a community connection. It's the backbone of the emergency alert system, keeping us safe in dangerous times. It's critical that we keep AM radio in cars because when cell and Internet services are down, this free emergency service could be your only lifeline.