We Must Prevent

What We Cannot Cure

Guided by the values and expertise of medicine and public health, we work to protect human life from the gravest threats to health and survival.

Recent News

Trick Question: Can Nuclear Reactors Explode?

What the difference is between a nuclear reactor and a nuclear bomb? At the most fundamental level, no difference: both get their energy from nuclear fission.

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Rep. Watson Coleman, Sen. Sanders Introduce WATER Act to Improve Water Safety, Affordability, Access

Insider NJ article quoting PSR Arizona Executive Director Barbara H. Warren, MD, MPH.

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The Fuel that Powered Fat Man and Little Boy

Professor John Warnock explains the bombs used in Hiroshima and Nagasaki.

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Nonprofit helps protect Tucson homeowners in solar purchases

Tucson-area homeowners can get help buying rooftop solar systems from a nonprofit that sets up buyers’ cooperatives to make sure consumers get a fair deal.

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Welcome to PSR Arizona

Currently we focus our efforts on nuclear weapons treaties, climate change action, and promotion of renewable energies, especially solar energy. We collaborate with a number of other peace and environmental organizations in our communities.