Readers discuss diversity, equity and inclusion efforts. Also: The debate; Donald Trump’s mental state; the Sentinel missile program; a walker in Manhattan.

The next US administration should respond positively to China’s invitation to negotiate a no-first-use nuclear weapons treaty.

Recent analysis of the Sentinel nuclear weapons program found the estimated costs to be much higher than anticipated--and the system will not make us any safer from the threat of nuclear war than we a...

In response to a question during a regular press conference, Chinese Foreign Ministry Spokesperson Lin Jian said, “the Chinese side decided to hold off discussion with the US on a new round of consult...

The total cost of the Sentinel missile, when you include all the costs of the warhead it will carry, will be more than $185 billion. The ever-increasing price tag for the new intercontinental ballisti...

Young people drive social movements. Nuclear disarmament advocates should more aggressively recruit help from Gen Z.

In St. Louis and around the country, people harmed by the drive for an atomic bomb have been shut out of a federal law enacted to help such victims.

Top stories in the U.S. and world news, politics, health, science, business, music, arts and culture. Nonprofit journalism with a mission. This is NPR.

Despite the Senate’s approval of a bill to broaden and prolong the Radiation Exposure Compensation Act, the fight for justice isn't over.

Government efforts to modernize and expand their arsenals are increasing the risk that human civilization could be obliterated in a few hours

The Senate voted today 69-30 to advance legislation that would protect and strengthen the Radiation Exposure Compensation Act.

Our new map shows where nuclear weapons facilities overlap with areas with a history of wildfires.

Will humanity survive the forces unleashed at Los Alamos in 1945?

A panel of experts voted down a proposal to officially declare the start of a new interval of geologic time, one defined by humanity’s changes to the planet.

Rapidly expanding Texas wildfires fueled by surging winds have prompted evacuation orders for several towns and shut down a nuclear facility in the state's rural Panhandle.

If the Air Force really wanted to protect Americans, it would get rid of land-based ICBMs, not spend billions of dollars on new ones.

In the absence of authoritative information, it's dangerous to encourage readers to jump to conclusions, especially US decision-makers,

The issues around the civil and military uses of space benefit from solidly-researched information describing different states’ investments in space.

After a setback in 2023, advocacy for the Radiation Exposure Compensation Act picks up again.

after nearly 80 years of fighting, many communities are still waiting for basic support for the cancers and other illnesses they suffer.

We need your help! Please call in support of the RECA Amendment which is currently attached to the National Defense bill.Call and make your voices heard: H...

Senior Outreach CoordinatorGlobal Security ProgramUnion of Concerned ScientistsRemote Bargaining Unit Position: YesOur organization The Union of Concerned Scientists (UCS) is an independent nonprofit ...

It is truly unique in Earth history for a species to flourish in such a short time while simultaneously applying the peak of its capabilities to threaten its own self-destruction.

All the junk orbiting the Earth could disrupt life down here. The world has some options for dealing with it.