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How to Eat a 2,000-Pound Fish? These Orcas Choose to Pulverize It.

ALEXA ROBLES-GIL

Marine biologists in Mexico captured video of a strange maneuver that killer whales used to shred their meal.

Why Tom Hiddleston finds Pompeii so haunting—and so human

Actor Tom Hiddleston reflects on the first time he visited Pompeii as a teenager and explains why the ancient city's preserved tragedy continues to shape his understanding of history and humanity

China’s Kimi K3 and the rise of open-weight AI models

Moonshot AI's Kimi K3 shows how opening a model to outsiders can turn other companies' computing power into a competitive advantage

John Pardon Untangles the Theoretical Loops

KENNETH CHANG

The mathematics professor has won a prestigious Fields Medal for his work at the intersection of geometry, topology and physics.

Humans may have spoken 10 times as many languages 2,000 years ago

During a lost 'golden age' of language, humans may have spoken tens of thousands of different tongues, a new study suggests

Yu Deng Predicts the Actions of the Whole From Its Tiniest Parts

KENNETH CHANG

Dr. Deng, a mathematics professor at the University of Chicago, received a Fields Medal for his work on an equation describing fluid mechanics.

Susumu Tonegawa Dies at 86; Nobel Laureate Showed How Antibodies Fight Infection

DYLAN LOEB MCCLAIN

The first Japanese scientist to win the Nobel Prize in Physiology or Medicine, he went on to discover how memories are stored, advancing understanding of how the brain works.

Tansplanted testicular tissue grew sperm in an infertile patient

The history of testicular transplants is long and often sordid, but this successful procedure offers hope for survivors of cancer and other diseases that affect fertility

Why don’t insects live in the ocean?

Nobody knows why insects aren't found living in the ocean. Scientists just eliminated one theory

Why environmental groups are suing over SpaceX’s land swap deal

If approved, this deal would give SpaceX hundreds of acres that are currently part of the Lower Rio Grande Valley National Wildlife Refuge in exchange for private land

Ancient geology could insulate Iran's nuclear centrifuges under Pickaxe Mountain from bombing

Iran's Pickaxe Mountain, or Kuh-e Kolang Gaz La in Persian, is part of a volcanic arc that formed tens of millions of years ago and is made of a tough-to-penetrate rock

Health Care Agency Discontinues Dozens of Active Research Awards

KATRINA MILLER

The Agency for Healthcare Research and Quality slowed the awarding of new grants last year. Now it is stopping existing ones.

Saudis Reach Deal With U.S. That Could Let Them Enrich Nuclear Fuel

DAVID E. SANGER, EDWARD WONG AND WILLIAM J. BROAD

U.S. lawmakers and Israeli officials have expressed opposition to such a plan, to be announced Wednesday, fearing that the kingdom could use a civilian nuclear project to develop nuclear weapons.

What to Know About Peptides the FDA Is Considering for Use

DANA G. SMITH

The agency is considering whether compounding pharmacies should be allowed to produce BPC-157, TB-500 and other previously banned peptides.

Jackie, Bald Eagle and Webcam Star, Is Recovering After an Attack in California

ALEXANDRA E. PETRI

Jackie found an online audience through a webcam pointed at her nest in California. She was rescued last week after a fight with other eagles, officials said.