Here’s a curious question: Do certain physical events have no cause, or is there a reason behind every action? This conundrum lies at the heart of one of the strangest areas of foundational science.

Quantum mechanics is a weird thing. It says that we can never really know all there is about reality. If we measure a particle, we can't know its exact momentum and position at the same time. If we ...

One of the more unsettling discoveries in the past half a century is that the universe is not locally real. In this context, “real” means that objects have definite properties independent of ...

My question regards Einstein's belief that quantum theory was incomplete due to its seemingly probablistic nature. From what I gather he believed that there was some other theory, some deeper theory, ...

Exploring cause and effect A photo of the Sagnac interferometer used to generate polarization-entangled photon pairs during a basis measurement. (Courtesy: Davide Poderini/Sapienza University of Rome) ...