All papers have been peer-reviewed. This book contains the lectures given at the joint meeting “Ninth Torino Workshop on Evolution and Nucleosynthesis in AGB Stars” and “Second Perugia Workshop in Nuclear Astrophysics”, held together in Perugia (Italy) from October 21 to October 26, 2007. In the present book, the fields covered by the lecturers are quite wide: the joining of the “Torino Workshops” strictly focused on AGB stars, and of the “Perugia Workshops” dedicated to a broader view of Nuclear Astrophysics, resulted in a coordinated, but widely interdisciplinary discussion, where AGB nucleosynthesis could be integrated by complementary issues concerning nuclear processes in massive stars, while the observational sessions usually dominated by spectroscopic results on stellar atmospheres and laboratory measurements on solar and pre-solar system materials could be complemented by the rich information now coming from space-borne infrared photometry.