Here’s how magnetic fields shape desert ants’ brains

A Chronicle reporter went undercover in high school. Everyone is still weighing the fallout

A.I.-Generated Garbage Is Polluting Our Culture

Why Russia has kept a Wall Street Journal reporter in jail for a year — and counting

Solving a Century-Old Byline Mystery

Han Purple: The 2,800-Year-Old Mystery Solved by Quantum Physicists

Video: We May Have Seen a White Hole Exploding, and It Was Under Our Nose This Whole Time [18:00]

This week: Insulin milk, dog vocabulary, Swedish rock star, and more!

On this day in 1951 a pipe bomb exploded in Grand Central Terminal. It was merely the first of many.

Once lost to science, these “uncharismatic” animals are having their moment

How Much Carbon Can a Tree Really Store?

Massachusetts: robotic police dog shot and credited with averting bloodshed

Working With Your Hands Is Good for Your Brain

Understanding Dyscalculia, Dyslexia’s Numeric Counterpart

The Social Benefits of Getting Our Brains in Sync

The ancient Roman alternative to daylight savings time

Video: Why is this number everywhere? [23:50]

Can We Get Kids Off Smartphones?

Largest Gold Nugget Ever Found Weighed as Much as an Adult Man

Police Are Tagging Fleeing Cars With GPS Darts to Avoid Dangerous Pursuits

Inside the Most Expensive Plane Crash in History: How America’s Most Secretive Stealth Bomber Ended Up in Flames

Animal Hybrids That Truly Exist in Nature, From Narlugas to Grolar Bears to Coywolves

‘I wasn’t sure it was even possible’: the race to finish 80,000 levels of Super Mario Maker

Online Conspiracies About the Baltimore Bridge Collapse Are Out of Control

How Baseball’s Official Historian Dug Up the Game’s Unknown Origins

NASA’s New Asteroid Sample Is Already Rewriting Solar System History

Fusion drive space engine ready for flight

How Boeing Favored Speed Over Quality for the 737 Max

What do terracotta warriors tell us about life in ancient China?

The leap second is being affected by climate change, scientists warn

We’ve glimpsed something that behaves like a particle of gravity

Japan moon probe survives second lunar night

The Women Who Found Liberation in Seaweed

The last crimes of Caravaggio

Light at the End of the Tunnel

Pythagoras was wrong: there are no universal musical harmonies, study finds

What to Know About Life-Saving ECPR

Is Dementia Primarily a Modern Phenomenon? New Research Reveals Its Near Absence in Ancient Greece and Rome

Thames Tideway Tunnel super sewer completed

Researchers show that introduced tardigrade proteins can slow metabolism in human cells

Video: Disneyland’s Main Street Tobacco Shop [37:46]

The Day Treva Throneberry Disappeared

Memories are made by breaking DNA — and fixing it

Exploring the roots of stupidity: first understand the psychology of what lies behind irrational opinions

Machines Are on the Verge of Tackling Fermat’s Last Theorem—a Proof That Once Defied Them

AlUla: The Middle East’s once-inaccessible ancient wonder

The company building a rotating detonation engine is pushing the tech forward

Higher genetic risk of obesity means working out harder for same results

Shark Skin Generates Thrust, Say Researchers

Not Old World Europe, this is India’s Ghostly Town of Sidhpur

Europe Has Big Plans for Saturn’s Moon Enceladus

One big problem with how we rank countries by happiness

A Metal Detectorist Stumbled Upon the Gold Nugget of a Lifetime

Scientists Found Earth’s Secret Underground Power Grid

Scientists discover how caterpillars can stop their bleeding in seconds

Sunken British Warship That Left Crew Marooned for 66 Days Has Been Identified

When Sleep Deprivation Is an Antidepressant

Why Baltimore’s Francis Scott Key Bridge Collapsed after Strike by Container Ship

How nature can alter our sense of time

Mars’ Gale Crater was Filled with Water for Much Longer Than Anyone Thought