CDC′s Mission is to collaborate to create the expertise, information, and tools that people and communities need to protect their health – through health promotion, prevention of disease, injury and disability, and preparedness for new health threats. Website contains information on Environmental Health topics including: Air Quality, Asbestos, Asthma, Carbon Monoxide Poisoning, Childhood Lead Poisoning Prevention, Climate Change, Mold, Radiation Studies, Water, Hazardous Waste Sites, Toxic Substances FAQs, and many other topics. Telephone hotline is operated 24 hours/day.