Physicians for Social Responsibility

Founded in 1961, Physicians for Social Responsibility (PSR) works to protect human life from the gravest threats to health and survival. PSR is the medical and public health voice for policies to prevent nuclear war and proliferation and to slow, stop and reverse global warming and toxic degradation of the environment. PSR's 50,000 members and e-activists, 31 PSR chapters, over 60 Student PSR chapters at medical and public health schools, along with national and chapter board members and staff, form a unique nationwide network committed to a safe and healthy world.

http://www.psr.org