“This retroactive idea. It has to be that,” says Nobel Prize-winning mathematical physicist Sir Roger Penrose, reflecting on a problem about the building blocks of reality that has dogged physics for ...

Quantum theory and Einstein's theory of general relativity are two of the greatest successes in modern physics. Each works extremely well in its own domain: Quantum theory explains how atoms and ...

In an effort to bring together the domains of gravity and quantum theory, Albert Einstein and Nathan Rosen proposed a ...

Quantum mechanics is one of the most successful theories in science — and makes much of modern life possible. Technologies ranging from computer chips to medical-imaging machines rely on the ...

Modern physics has been shaped by great minds, yet somehow physics hasn’t explained what the mind is. For decades consciousness was not a respectable area of inquiry in physics, yet the great quantum ...

Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still ...

Beyond physics and computer science, understanding quantum computing is now essential for ethical, strategic, and creative leadership in every field.