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When Does the Brain Operate at Peak Performance?

January 31, 2023

The critical brain hypothesis suggests that neural networks do their best work when connections are not too weak or too strong.

Astronomers Say They Have Spotted the Universe’s First Stars

January 30, 2023

Theory has it that “Population III” stars brought light to the cosmos. The James Webb Space Telescope may have just glimpsed them.

How Quantum Physicists ‘Flipped Time’ (and How They Didn’t)

January 27, 2023

Two teams have made photons act as if time were simultaneously flowing in two directions. The experiments demonstrate a way to potentially boost the performance of quantum devices.

The Cause of Depression Is Probably Not What You Think

January 26, 2023

Depression has often been blamed on low levels of serotonin in the brain. That answer is insufficient, but alternatives are coming into view and changing our understanding of the disease.

Q&A

The Computer Scientist Who Finds Life Lessons in Games

January 25, 2023

In Shang-Hua Teng’s work, theoretical and practical questions have long been intertwined. Now he’s turning his focus to the impractical.

Mathematicians Find an Infinity of Possible Black Hole Shapes

January 24, 2023

In three-dimensional space, the surface of a black hole must be a sphere. But a new result shows that in higher dimensions, an infinite number of configurations are possible.

The Basic Algebra Behind Secret Codes and Space Communication

January 23, 2023

Whether you’re passing secret notes in class or downloading images from a space probe, Reed-Solomon codes offer an ingenious way to embed information and correct for errors.

Standard Model of Cosmology Survives a Telescope’s Surprising Finds

January 20, 2023

Reports that the James Webb Space Telescope killed the reigning cosmological model turn out to have been exaggerated. But astronomers still have much to learn from distant galaxies glimpsed by Webb.

Mathematicians Roll Dice and Get Rock-Paper-Scissors

January 19, 2023

Mathematicians have uncovered a surprising wealth of rock-paper-scissors-like patterns in randomly chosen dice.

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