Q&A with David Rideout: Testing Reality in Space
Satellite experiments could soon investigate the boundaries of quantum physics and relativity.
Classic Article: The Art of Math
A pictorial branch of mathematics could help physicists draw new conclusions about quantum gravity and the nature of time.
Readers' Choice: Cheating the Causal Game
A new quantum framework that blurs cause-and-effect at a fundamental level could improve information processing and lead to a theory of quantum gravity.
Discord in the Quantum World
An alternative quantum resource to entanglement could help physicists in the quest to construct a quantum computer.
A View From the Top
Thinking of causation as a "two-way street"—along which the passage of information can be inverted—could have implications for the origin of life.
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