Chris White is a Research Chemist in the Polymeric Materials Group at the USA's National Institute of Standards and Technology (NIST). He has 30 years of experience in service life prediction of polymers, over 100 peer reviewed publications, numerous books, and presentations. He is the organizer for 5th, 6th, and 7th Service life Prediction gatherings of international experts. Kenneth M. White is Lead Research Specialist in the Weathering Research Center of the 3M Corporate Research Analytical Laboratory. He is a recognized world leader in the weathering of polymers and has contributed to some of the most influential and well cited publications and presentations in this field. James Pickett is now a consultant, having retired from GE Global Research after 33.5 years as a physical organic chemist. His work focuses on degradation, stabilization, testing, and lifetime prediction of plastics and coatings. He has over 60 issued US patents and has written over 50 peer reviewed papers and book chapters.