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What your dog really thinks about you

Science is helping to peel back the layers of how dogs process the world around them

What eyewitness accounts tell us about the science of memory

The malleability of memory once cast doubt on eyewitness identification in criminal cases, but new research reveals how eyewitness memory can be used accurately

AI labs are claiming “AGI” is imminent—but does that mean what we think it means?

Artificial general intelligence was once a term confined to technical science papers, but its meaning has slipped

See the first new species of cat discovered in more than a century—it’s adorable

The cat is smaller than a house cat but has the spots of a leopard

Human brain organoid transplants mesh with mouse brains, forming active neural circuits

The technique opens new possibilities for investigating neurological conditions, from autism to dementia

Can independent AI auditors keep up with frontier AI development?

Independent auditors are emerging as a key part of plans to rein in frontier AI. But the systems are evolving faster than the methods used to evaluate them

North Korea’s nuclear tests have turned this mountain into an earthquake hot spot

Seismic activity has increased markedly at Mount Mantap, also known as Mantapsan, since the last test blast there in 2017

OpenAI cracks the hidden math that keeps your texts from turning to gibberish

The surprising real-world applications of high-dimensional sphere packing and the 48-year-old barrier that OpenAI just broke

This Rare Gene Drastically Raises Lung Cancer Risk in People Who Never Smoked

GINA KOLATA

The gene is found predominantly in Southern Appalachia and may be one of the most powerful cancer-risk mutations ever found.

Scientists Overhaul Giant Particle Collider in Search of Universe’s Hidden Building Blocks

K. R. CALLAWAY

The European Organization for Nuclear Research, or CERN, will dismantle the Large Hadron Collider, which helped discover the so-called God Particle, in order to build a more powerful particle accelerator.

What Happens When A.I. Stops Doing What Humans Want?

DYLAN FREEDMAN

“Alignment” is the science of teaching A.I. to do what is in line with human preferences, ethics and judgment. But, at times, the systems have gone rogue.

The Liftoff Scenario That Terrifies A.I. Doomsayers

CADE METZ

“Recursive self-improvement” is the idea that artificial intelligence could learn to build and train itself, creating exponential new progress — and risk.

The Next Gene-Editing Technology May Also Be the Oldest

CARL ZIMMER

Scientists have discovered a powerful gene-targeting system in viruses. Billions of years old, VIPR seems to predate CRISPR and may be even more effective.

Microscopic Videos That Show the Invisible Wonders Around Us

STELLA RAINE CHU

The winners of this year’s Nikon Small World in Motion competition showcase the wiggly, feathery, undulating beauty of invisible life.

Toxic Fracking Waste Becoming a Political Issue in Ohio

QUINN GLABICKI

The Democratic candidate for governor backed restrictions on disposal of fracking wastewater around a hard-hit town, and called for a “thorough investigation” of the dangers.