The emerging awareness of climate threats and other environmentally related problems creates challenges for logistics. Greening logistics introduces various avenues to understand and improve logistics systems from an environmental perspective. Freight transport is part of, as well as a consequence of, the logistics system, where the environmental challenges cannot, and should not, be met at the cost of efficiency and competitiveness. During the last decade, research into green logistics has expanded and matured dramatically. From being in the outskirts of the logistics field, environmental considerations have become a more natural part of logistics research. This book provides examples of research performed by Swedish Ph.D. students, and illuminates parts of the multifaceted area of green logistics research. The Ph.D. students have each contributed with one chapter, in which they present their research in their own words. This book is aimed at various audiences: for students and teachers in universities and professional programmes -- to facilitate the understanding of a complex, important, and emerging area; for business -- to demonstrate green logistics important role, and provide inspiration and guidance for further development; for funding bodies -- to demonstrate the strength of a joint funding initiative: the development of research competence at various universities; and for researchers -- as inspiration and introduction to the area of green logistics.