Carl Hart is a prominent neuroscientist and psychologist known for his research on drug addiction, particularly focusing on the effects of drugs on behavior and the social context of substance use. His work challenges traditional views on addiction, emphasizing the importance of socio-economic factors and individual choice rather than solely biological or moral failings. Hart's insights are crucial in understanding the etiology and treatment approaches to addictive disorders, particularly in advocating for a more compassionate and evidence-based perspective on drug policy.