title: Introduction to the atmospheric issues section.
authors.forename: Michael
authors.initials: M
authors.lastname: Unsworth
mesh_terms: D000393:Air Pollutants / Q000009:adverse effects*; D005060:Europe; D011786:Quality Control; D012106:Research / Q000639:trends; D014481:United States
chemical_list: D000393:Air Pollutants