The Doomsday Clock currently sits at 89 seconds to midnight in 2025, marking humanity's closest approach to global ...

In a first, researchers from the U.S. and Germany excite Thorium-229 in opaque material, advancing optical nuclear clocks.

In 2008, a team of UCLA-led scientists proposed a scheme to use a laser to excite the nucleus of thorium atoms to realize extremely accurate, portable clocks. Last year, they realized this ...

For decades, atomic clocks have provided the most stable means of timekeeping. They measure time by oscillating in step with ...

AI is already sufficiently robust that it introduces new global risks and exacerbates existing threats. Its development is ...

Three Mile Island, site of a past nuclear accident, is set to power the AI boom. A long-shuttered reactor is being rebuilt to ...

Nuclear clocks are a technology researchers have been working toward for decades. New research in theoretical physics brings them closer to reality.

A revolutionary achievement could pave the way for smaller, more efficient nuclear clocks. Last year, a research team led by UCLA achieved a milestone scientists had pursued for half a century. They s ...

A research team from the University of California Los Angeles (UCLA), Ludwig Maximilian University of Munich (LMU), and Johannes Gutenberg University Mainz (JGU) has succeeded in exciting the atomic ...

Behind closed doors with the experts who study the end of the world—and what they know about humanity’s capacity for survival ...

In a region already bristling with all types of nuclear weapons, bestowing latent nuclear-weapon-state status upon South Korea is needlessly destabilizing.

Last year, a UCLA-led team accomplished something scientists have been trying to do for 50 years. They made radioactive thorium nuclei absorb and ...