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What a Contest of Consciousness Theories Really Proved

August 24, 2023

A five-year “adversarial collaboration” of consciousness theorists led to a stagy showdown in front of an audience. It crowned no winners — but it can still claim progress.

The AI Tools Making Images Look Better

August 23, 2023

Researchers have discovered ways around a fundamental trade-off between accuracy and beauty in digital images.

An Old Conjecture Falls, Making Spheres a Lot More Complicated

August 22, 2023

The telescope conjecture gave mathematicians a handle on ways to map one sphere to another. Now that it has been disproved, the universe of shapes has exploded.

Quaking Giants Might Solve the Mysteries of Stellar Magnetism

August 21, 2023

In their jiggles and shakes, red giant stars encode a record of the magnetic fields near their cores.

Complexity Theory’s 50-Year Journey to the Limits of Knowledge

August 17, 2023

How hard is it to prove that problems are hard to solve? Meta-complexity theorists have been asking questions like this for decades. A string of recent results has started to deliver answers.

Math Proof Draws New Boundaries Around Black Hole Formation

August 16, 2023

For a half century, mathematicians have tried to define the exact circumstances under which a black hole is destined to exist. A new proof shows how a cube can help answer the question.

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Andreas Wagner Pursues the Secrets to Evolutionary Success

August 15, 2023

Why did mammals, grasses and some other groups of organisms explode in diversity only after millions of years? The evolutionary biologist Andreas Wagner plumbs the secrets of those “sleeping beauties.”

JWST Spots Giant Black Holes All Over the Early Universe

August 14, 2023

Giant black holes were supposed to be bit players in the early cosmic story. But recent James Webb Space Telescope observations are finding an unexpected abundance of the beasts.

Risky Giant Steps Can Solve Optimization Problems Faster

August 11, 2023

New results break with decades of conventional wisdom for the gradient descent algorithm.

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