It is in the Sila National Park area, specifically in Tirivolo, the cleanest air in Europe. These are the findings from research Antonietta Gatti and Stefano Montanari, Nanopatologie experts, whose findings will be presented to the press Wednesday. Stefano Montanari, is director of the Laboratory Nanodiagnostics of Modena, and Antonietta Gatti, is an expert in Nanopatologies.