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One in eight new cancers are likely caused by infections—there’s an easy way to protect yourself

Many cancers associated with infection are preventable

Tiny implants use the body as a communication network

A new system sends faint electrical pulses through tissue instead of over Bluetooth. In rats, it made the animals flex one of their hind legs on cue when one of their front paws moved

See the cool photos this Jupiter-bound spacecraft took while swinging by Earth

Juice is on its way to study Jupiter's moons, with a little assist from Earth's gravity

U.S. space weapons probably aren’t what you think

Elusive, satellite-stalking spacecraft could unleash space war—or help keep orbital peace

Did Anthropic’s A.I. Really Make a Scientific Discovery on Its Own?

CARL ZIMMER

An expert at the University of Copenhagen said his team had been sharing its research with the company’s A.I. model, Claude, and that its new finding matched their work.

V.A. Institutes New Consent Requirements for Some Psychiatric Drugs

AZEEN GHORAYSHI AND ANDREW JACOBS

Veterans under 30 will have to sign forms before being given antidepressants. Medical groups fear the moves may stigmatize mental health treatment.

What If A.D.H.D. Isn’t About Attention at All?

AWAIS AFTAB

Evidence suggests that it really affects what psychiatrists like me call sustained engagement — an important difference in understanding how to think about the condition.

Dogs Will Fight Bears. But Not Because of the Reason You Might Think.

ALEXANDER NAZARYAN

Scientists analyzed hundreds of encounters between bears and canines. The results raise the suggestion that dogs may not always protect people in the wild.

Ukrainian Science Academy, Struck by Drone, Played Key Role in Research

ROBIN GEORGE ANDREWS AND NATALIIA NOVOSOLOVA

Over 90 percent of Ukraine’s scientific discoveries have been attributed to Ukraine’s National Academy of Sciences, including advancements in astronomy and military technology.

Radio Waves Coming From an Alien Planet May Be a Cosmic First

JONATHAN O’CALLAGHAN

Beta Pictoris b appears to have an aurora caused by a powerful magnetic field. If confirmed, it would be the first such field known outside our solar system.

Tennessee Valley Authority Gets Approval to Build Small Nuclear Reactor

BRAD PLUMER

It’s only the second time that American regulators have approved a next-generation commercial reactor for construction. Big hurdles remain.

Blockbuster retatrutide trial signals a ‘new high-water mark’ for weight-loss drugs

The experimental weight-loss drug is a triple agonist and the first of its kind to reach a phase 3 clinical trial

SpaceX’s Starship Makes It to Orbit for the First Time, but Returns to Earth Early

KENNETH CHANG

The 14th test flight marks a crucial milestone toward the company’s ambitions of sending people to the moon and Mars, but it was not a complete success.

Why AI-powered romance scams are harder than ever to spot

How AI is transforming online romance scams, and what you can do to protect yourself

IVF ‘add-ons’ offer hope to parents desperate for a baby. But are they backed by science?

There's little evidence that many IVF "add-on" treatments work. Should they even be offered?