This is the first comprehensive, multidisciplinary, inter-religious, and critical engagement with transhumanism as a cultural phenomenon, an ideology, and a philosophy. Situating transhumanism in its proper historical context, the essays reflect on transhumanism from the perspectives of several world religions, ponder the feasibility of regulating human enhancement, tease out the philosophical implications of transhumanism, explore the interplay between technology and culture, and expose the scientific limits of transhumanism. Written by scholars of religious studies, philosophy, history, psychology, neuroscience, immunology, engineering, science/technology studies, and law, the volume encourages readers to examine transhumanism seriously and critically because of its ramifications for the future of humanity.