An Air That Still Kills is the alarming and still-unfolding story of the deadliest environmental disaster in the United States. The catastrophe began in Libby, Montana, where hundreds of people died and thousands more were sickened from the asbestos that contaminated a vermiculite mine. But mine owner W.R. Grace spread the danger across North America when it exported the lethal vermiculite, which still lurks in as many as 50 million homes, businesses and schools. First authored by Andrew Schneider and David McCumber, this updated book includes frightening new disclosures by Schneider about the growing threat from Libby's uniquely potent form of asbestos.