plutonium

photo of a gloved hand holding a plutonium pit, which appears to be a gray metallic disc

US Department of Energy

June 12, 2025

Ask a Scientist: New Plutonium Pits for Nuclear Weapons Are Not Needed

Guest Commentary

This older black and white photo shows Native Americans fishing for salmon at Celilo Falls on the Columbia River.

Russell Lee/Getty Images

April 9, 2025

Justice for Downwinder Communities in Washington

Elizabeth McClure
Kendall Fellow

December 20, 2019

The Human Side of Nuclear Weapons Issues in the FY20 Defense Bill

Lilly Adams
Senior Outreach Coordinator

July 10, 2019

The House is Setting a New, More Rational Direction for US Nuclear Policy

Eryn MacDonald
Global Security Analyst

April 26, 2018

What Does North Korea Want—and What is the US Prepared to Give?

David Wright
Former Contributor

March 23, 2018

Another Nail in the Coffin of the Misguided MOX Program

Ed Lyman
Director, Nuclear Power Safety

March 19, 2018

The Case of the “Low-Yield” Trident Warhead

Stephen Young
Senior Washington Representative

February 15, 2018

The “Versatile Fast Neutron Source”: A Misguided Nuclear Reactor Project

Ed Lyman
Director, Nuclear Power Safety

August 12, 2017

The Pyroprocessing Files

Ed Lyman
Director, Nuclear Power Safety

June 9, 2017

Increase in Cancer Risk for Japanese Workers Accidentally Exposed to Plutonium

Ed Lyman
Director, Nuclear Power Safety

May 25, 2017

The Good, the Bad, and the Ugly: NNSA’s FY18 Budget Request

Stephen Young
Senior Washington Representative

January 3, 2017

Scientists’ Letter to Trump Supporting Iran Nuclear Deal

David Wright
Former Contributor

December 20, 2016

Last Call! Obama’s Final Actions on Nuclear Weapons

Lisbeth Gronlund
Former UCS Global Security Program Co-Director

December 16, 2016

Reflections on the IAEA Nuclear Security Conference: More Participants, Less Focus

Ed Lyman
Director, Nuclear Power Safety

December 12, 2016

Cuts to the Fissile Materials Stockpile

Eryn MacDonald
Global Security Analyst

December 7, 2016

President Obama Can Still Reduce Stored Nuclear Weapons & Fissile Materials

Eryn MacDonald
Global Security Analyst

Savannah River Site

November 22, 2016

Let’s Get a Better Deal on Plutonium Disposition

Ed Lyman
Director, Nuclear Power Safety

October 18, 2016

Trimming the Fat: Obama and Nuclear Weapons Cuts

Lisbeth Gronlund
Former UCS Global Security Program Co-Director

October 3, 2016

Another knock against MOX

Stephen Young
Senior Washington Representative

June 2, 2016

JASON Critiques the 3+2 Nuclear Stockpile Plan

Stephen Young
Senior Washington Representative

Photo: Nuclear Regulatory Commission

May 5, 2016

Will Congress Reject the Administration’s New Plan to Dispose of Excess Plutonium?

Stephen Young
Senior Washington Representative

April 21, 2016

Bad science: Russian objections to US plutonium proposal not a reason to keep MOX

Stephen Young
Senior Washington Representative

April 11, 2016

New NNSA Stockpile Plan Same as the Old Plan: Problematic

Stephen Young
Senior Washington Representative

March 31, 2016

The Perfect Gift for the Nuclear Security Summit

Ed Lyman
Director, Nuclear Power Safety