Physicians for Social Responsibility

Physicians for Social Responsibility (PSR) is a physician-led nonprofit organization in the United States working to protect public health from the threats of nuclear weapons, climate change, and environmental toxins. Founded in 1961, PSR produces and disseminates publications, provides specialized training, offers written and oral testimony to Congress, conducts media interviews, and delivers professional and public education on nuclear disarmament, climate policy, and environmental health issues. The organization operates through its national office, state and local chapters, and student network, which together form a nationwide network addressing threats to global health and security, including nuclear warfare, nuclear proliferation, climate change, and toxic degradation of the environment.

As the U.S. affiliate of International Physicians for the Prevention of Nuclear War (IPPNW), PSR shared in the 1985 Nobel Peace Prize awarded to IPPNW "for spreading authoritative information and by creating an awareness of the catastrophic consequences of atomic warfare."