Viruses exist at the boundary between living and non-living matter, while skin is a living interface between physics and ...

Einstein–Rosen bridges may reflect a two-directional structure of time that preserves information and hints at a pre–Big Bang universe.

Add Yahoo as a preferred source to see more of our stories on Google. The Greenberger–Horne–Zeilinger (GHZ) paradox describes how quantum theory cannot be described by local realistic descriptions. A ...

Breaking the time asymmetry remains a fundamental yet tantalizing scientific challenge. At the macroscopic level the quest has so far turned out to be fruitless, but on the other hand in the subatomic ...

Quantum theory is a mind-bending idea, suggesting that, at the subatomic level, particles can exist in multiple states at the same time. Scientists often give the example of physicist Erwin ...

The idea of a particle that races faster than light has long fascinated physicists. Known as the tachyon, it was originally dreamed up to help untangle paradoxes in quantum theory and relativity.

This article is part of a package in collaboration with Forbes on time capsules, preserving information and communicating with the future. Read more from the report. Yet according to physics, ...

In anti-Klein tunneling, sound waves bounce back as if hitting an invisible wall; in Klein tunneling, they pass through the barrier effortlessly—as if the wall isn’t there at all. In a groundbreaking ...