Migration research has long focused predominantly on researching migrants from the perspective of majority societies. These approaches are increasingly being condemned as "migrantology". At the same time, new theories and methodologies have emerged over the last decades that take migration as a starting point to analyse global inequalities and the drawing of national boundaries which exclude migrants. The present volume takes up this new research tradition. Most contributions illustrate how the approaches can be translated into empirical research. The authors do not analyse migrants, but discuss global challenges such as climate change, societal debates about migration, the handling of societal diversity in schools, administration and the labour market, as well as the negotiation of belonging in migration societies characterized by racism and exclusion.