This book captures some of the emergent topics and methods in demography at the turn of this 21st century. Like all social sciences, the concerns and tools of demography must evolve with the times. As new technologies expand data management opportunities, and as a changing world faces new demographic issues, the field of demographic research must expand as well. The chapters in the book rise to this challenge by embracing new questions or new approaches to classic questions about demographic processes and their link to development, including inequality, health, migration, and youth across the world.