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The Year in Physics

December 22, 2021

Puzzling particles, quirky (and controversial) quantum computers, and one of the most ambitious science experiments in history marked the year’s milestones.

The Year in Biology

December 21, 2021

The detailed understanding of brains and multicellular bodies reached new heights this year, while the genomes of the COVID-19 virus and various organisms yielded more surprises.

Detailed Footage Finally Reveals What Triggers Lightning

December 20, 2021

Scientists have never been able to adequately explain where lightning comes from. Now the first detailed observations of its emergence inside a cloud have exposed how electric fields grow strong enough to let bolts fly.

What Does It Mean for AI to Understand?

December 16, 2021

It’s simple enough for AI to seem to comprehend data, but devising a true test of a machine’s knowledge has proved difficult.

Mathematician Hurls Structure and Disorder Into Century-Old Problem

December 15, 2021

A new paper shows how to create longer disordered strings than mathematicians had thought possible, proving that a well-known recent conjecture is “spectacularly wrong.”

Q&A

When a Gene Illness Discovery Means Breaking Bad News

December 14, 2021

When scientists discover genes linked to dangerous illnesses in their samples, how should they convey that news to the study participants? The geneticist Cristen Willer had to tackle that challenge.

Cosmologists Parry Attacks on the Vaunted Cosmological Principle

December 13, 2021

A central pillar of cosmology — the universe is the same everywhere and in all directions — is surviving a storm of possible evidence against it.

Mathematicians Transcend Geometric Theory of Motion

December 9, 2021

More than 30 years ago, Andreas Floer changed geometry. Now, two mathematicians have finally figured out how to extend his revolutionary perspective.

Gravitational Waves Should Permanently Distort Space-Time

December 8, 2021

The “gravitational memory effect” predicts that a passing gravitational wave should forever alter the structure of space-time. Physicists have linked the phenomenon to fundamental cosmic symmetries and a potential solution to the black hole information paradox.

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