The volume takes a close look at discourse perspectives on academic genres. In the context of scientific communication and the evolution of postmodern culture and society, academic genres have undergone various changes. The study shows that cultural heterogeneity of academic genres, styles and discourses now gives way to an increasing hybridization and discusses theoretical aspects of this process. The second part focuses on specific dimensions of hybridization, in particular between global and local academic genres and discourses, and between real and virtual ones.