Clearing the air

by Indur M Goklany

"America's air quality is better today than ever before in modern history and continues to steadily improve. How did this remarkable turnaround come about?" "Basing his conclusions on a painstaking compilation of long-term empirical data on air quality and emissions data extending from the pre-federalization era to the present (some dating back a century), Goklany challenges the orthodoxy that credits federal regulation for improving air quality."--BOOK JACKET.