AbstractThis introduction to the special issue explores the increasing integration of biosocial and evolutionary approaches within sociology, highlighting the diverse ways in which these perspectives are incorporated into sociological research. In the past, sociology had reservations against or even rejected biological and evolutionary explanations of human behavior and often viewed them with skepticism. However, recent developments have seen a resurgence of interest in these approaches, leading to the emergence of interdisciplinary subfields such as biosociology, evolutionary sociology, neurosociology, and sociogenomics. This introduction provides a historical overview of biological and evolutionary thinking with regard to human behavior and sociality, tracing its roots from Darwinian theory to its contemporary applications within sociology. We discuss the conceptual and methodological differences between these approaches and offer an overview of key contributions that illustrate their relevance to core sociological topics. The articles in this special issue—which we summarize in this introduction—exemplify the variety of work being done at the intersection of sociology and the bio- and evolutionary sciences, from theoretical explorations to empirical studies. By presenting this range of interdisciplinary research, we aim to invite a broader sociological audience to engage with these perspectives, contributing to the development of a more comprehensive understanding of human behavior that sheds the dualism between nature and nurture—long overcome outside of sociology—for a consolidated effort to examine how nature and nurture are intertwined in multiple and complex ways.