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Four Years On, New Experiment Sees No Sign of ‘Cosmic Dawn’

February 28, 2022

When astronomers tried to confirm a signal from the birth of the first stars after the Big Bang, they saw nothing.

Cryptographers Achieve Perfect Secrecy With Imperfect Devices

February 25, 2022

For the first time, experiments demonstrate the possibility of sharing secrets with perfect privacy — even when the devices used to share them cannot be trusted.

Most Complete Simulation of a Cell Probes Life’s Hidden Rules

February 24, 2022

A 3D digital model of a “minimal cell” leads scientists closer to understanding the barest requirements for life.

Q&A

In Search of Cracks in Albert Einstein’s Theory of Gravity

February 23, 2022

Celia Escamilla-Rivera is combining large data sets with supercomputers to test general relativity against its little-known competitors.

Play First and Lose: Zugzwang in Chess, Math and Pizzas

February 22, 2022

How to win games by going second and leaving your opponent with no good options.

AI Overcomes Stumbling Block on Brain-Inspired Hardware

February 17, 2022

Algorithms that use the brain’s communication signal can now work on analog neuromorphic chips, which closely mimic our energy-efficient brains.

sex

A Billion Years Before Sex, Ancient Cells Were Equipped for It

February 16, 2022

Molecular detective work is zeroing in on the origins of sexual reproduction. The protein tools for cell mergers seem to have long predated sex — so what were they doing?

Machine Learning Becomes a Mathematical Collaborator

February 15, 2022

Two recent collaborations between mathematicians and DeepMind demonstrate the potential of machine learning to help researchers generate new mathematical conjectures.

The Mysterious Forces Inside the Nucleus Grow a Little Less Strange

February 14, 2022

The strong force holds protons and neutrons together, but the theory behind it is largely inscrutable. Two new approaches show how it works.

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