ENVIRONMENTAL DANGERS/LISTED BY DEMOGRAPHICS/BY STATE/WITH SPECIFIC AREAS/NATIONAL MAP: THIS MADE AVAILABLE THROUGH THE U.S. DEPARTMENT OF HEALTH & HUMAN SERVICES, BY THE (ATSDR), THE AGENCY FOR TOXIC SUBSTANCES & DISEASE REGISTRY, THE SITE IS: http://www.atsdr.cdc.gov/hac/pha/index.asp  This map will give not only Poisonous Dangers and Threats by State, but specific areas in each state, which have been contaminated, and/or have been considered an Environmental Threat or Danger at one time or another, and/or presently. Very Good Information to have, for anyone to analyze what may be an exposure threat to themselves, in the areas where they live. Many folks never have a clue as to some of the symptoms of exposure from certain hazards if these dangers are not posted, and/or after an initial cleanup of an area is finalized, or the majority of the media attention has faded, as there can continue to be problems from some of these hazards.