More Americans are now eligible for compensation for health problems linked to radiation exposure from the atomic weapons ...

Physicists have discovered that silicon-22 reveals a new proton magic number offering critical insights into nuclear ...

The Manhattan Project's Trinity test bomb detonated on July 16, 1945. The light, noise, shockwave, and fallout cloud were impossible to keep secret.

In this except from the biography of J. Robert Oppenheimer, we hear from the people at the historic first test of the atomic bomb in New Mexico.

With decades of experience in national security, Jill Hruby joins the Bulletin’s Science and Security Board to help confront ...

A new method turns noise into valuable data to enhance understanding of chemical reactions and material properties with unprecedented detail at the atomic level. The results of this research are now ...

For nearly a century, scientists around the world have been searching for dark matter—an invisible substance believed to make ...

Eighty years after the U.S. used the atomic bomb on Japan, debates on nuclear weapons remain fraught. In Los Alamos, the ...

The Trinity test—the detonation of the world's first nuclear bomb—was conducted 80 years ago as part of the Manhattan Project.

This July 2025 issue of the Bulletin of the Atomic Scientists examines a number of similar potential flashpoints—around the world, in the skies above, and even in cyberspace—that, if activated, could ...

Scientists anticipate that Earth's rotation will quicken enough to create three shorter days between July and August, starting Wednesday, July 9.