Scientists and philosophers have long questioned whether the future of the world is entirely a function of its past. They have wondered whether everything that happens — every wink, idea, smile — is ...

Scientists imagine virtual particles popping in and out of existence to explain how forces transfer between particles. koto_feja/iStock via Getty Images A clever mathematical tool known as virtual ...

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A hidden link has been found between two seemingly unrelated particle collision outcomes. It’s the latest example of a mysterious web of mathematical connections between disparate theories of physics.