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Three puzzles test whether the concept of infinity has purchase in the physical world.

The spokesperson for the Laser Interferometer Gravitational-Wave Observatory called it “a promising start to mapping the populations of black holes in our universe.”

How interbreeding among early hominins harmed humans but may have slowed the Neanderthals’ decline.

What could cause galaxies millions of light years apart to all spew material in the same direction?

A group of little-known Hungarian physicists claim to have found a new fundamental particle. Now other researchers are raising questions about the team’s past work.

Suchitra Sebastian’s searches for quantum anomalies have led to the potential discovery of a new building block of matter.

A lab in Hungary has reported an anomaly that could lead to a physics revolution. But even as excitement builds, closer scrutiny has unearthed a troubling backstory.

A new series of papers has settled a long-standing question related to the popular game in which players seek patterned sets of three cards.

Try these shortcuts for solving problems that seem to require a lengthy calculation.