Physicists attempting to unify the theories of gravity and quantum mechanics have long thought practical experiments were out of reach, but new proposals offer a chance to test the quantum nature of gravity on a tabletop...
The universe according to quantum mechanics is strange and probabilistic, but our everyday reality seems nailed down. New experiments aim to probe where—and why—one realm passes into the other...
The long-running effort to ditch the decaying, 19th-century artifact that defines the kilogram nears its conclusion
Quantum computers will render today's cryptographic methods obsolete. What happens then?
Astronauts already skip ahead in time, but the laws of physics seem to forbid going backward—or do they?
Ever rising IQ scores suggest that future generations will make us seem like dimwits in comparison
Ever-rising IQ scores suggest that future generations will make us seem like dimwits in comparison
Even as the last protons spin through the most successful particle accelerator in history, physicists hope to conjure one final triumph
If we are ever going to pick up a signal from E.T., it is going to happen soon, astronomers say. And we already have a good idea how events will play out
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