Targeting a full range of students and scholars, this volume provides a total of 50 chapters illustrating the linguistic dynamics and the dynamics of (inter)individual, and societal language contact as well as the dynamics of multidisciplinary language contact studies. Fueled by a wealth of data from a rich variety of contact situations, its geographically balanced case studies are governed by the triangulation between a focus on language structure and change, a sincere drive of sociopolitical and academic agency, and the confrontation with an everyday reality that can be unkind to (and ignorant of) those two factors. The volume clearly demonstrates the social relevance of our trade in a time burdened with ecolinguistic challenges.