The brain sciences are influencing our understanding of human behavior as never before, from neuropsychiatry and neuroeconomics to neurotheology and neuroaesthetics. Many now believe that the brain is what makes us human, and it seems that neuroscientists are poised to become the new experts in the management of human conduct. Neuro describes the key developments--theoretical, technological, economic, and biopolitical--that have enabled the neurosciences to gain such traction outside the laboratory. It explores the ways neurobiological conceptions of personhood are influencing everything from child rearing to criminal justice, and are transforming the ways we 'know ourselves' as human beings. In this emerging neuro-ontology, we are not 'determined' by our neurobiology: on the contrary, it appears that we can and should seek to improve ourselves by understanding and acting on our brains. Neuro examines the implications of this emerging trend, weighing the promises against the perils,