This is a comprehensive overview of recent progress in the development and application of modern service life prediction strategies to coatings and other polymeric materials. Topics covered include the effects of weather variability, novel light sources, effects of acid precipitation and exposure angle on weathering, new techniques for measuring time of wetness, and methods for following the chemical and mechanical degradation of organic coatings and other polymeric materials. There is also a section devoted to the understanding of degradation and stabilization processes as well as methods for manipulating the large amounts of data generated in service life studies.