When scientists unwittingly turned helium into a superfluid — a feat many thought was impossible — Dr. Leggett not only recognized what had happened but also explained how.

What was your favorite toy growing up? This paradox claims that memory—and every other one—is just a random fluctuation.

If you are leasing a car, what’s the point of paying thousands of dollars due at lease signing? My contract says tax, title, fees and licensing — but then wouldn’t I have to pay that again at the end ...

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This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. Brilliant Young Mathematician Is Writing on Big Blackboard and Thinking about Solving Long ...

The simulation hypothesis—the idea that our universe might be an artificial construct running on some advanced alien computer—has long captured the public imagination. Yet most arguments about it rest ...

Is there a universe where time flows backward or where our reality is flipped? The Mirror Universe Hypothesis explores this intriguing possibility, and we explain it all here. Boasberg reverses course ...

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Journal Editorial Report: The week's best and worst from Bill McGurn, Allysia Finley and Kim Strassel. Photo: Mathieu Lewis-Rolland/Getty Images/Marco Iacobucci/Zuma Press/David Paul Morris/Bloomberg ...

In various contexts, for practical, philosophical, and logical reasons, there is a default assumption. In the criminal justice system, for example, someone is presumed innocent until proven guilty.

Tom has a Master's degree in Journalism. His editorial work covers anything from archaeology and the environment to technology and culture. Tom has a Master's degree in Journalism. His editorial work ...