Greater Boston Physicians for Social Responsibility (GBPSR) is a chapter of Physicians for Social Responsibility (PSR®), a national organization of over 50,000 physicians, health care professionals, and supporters. PSR was formed in 1961 to address the health consequences of nuclear and other weapons of mass destruction. It has since broadened its mission to include the health consequences of environmental pollution and degradation, and also the reduction of violence and its causes. PSR’s international federation, the International Physicians for the Prevention of Nuclear War, was awarded the 1985 Nobel Peace Prize for its efforts to translate the abstract concept of nuclear war into medical and personal terms.GBPSR has members all over Eastern Massachusetts who work on issues relating to health, including environmental pollution, militarism and war, social justice and human rights. GBPSR’s Human Health and the Environment Project (HHEP) helped educate the medical community on the linkages between environmental exposures and health, activating members to work to protect public health, providing community groups with resources on human health and environment issues, and participating in public policy debates.GBPSR is currently focused on climate change and nuclear war.