Smartwatches could detect depression relapse weeks before symptoms return

A simple wearable device such as a smartwatch could one day help prevent the return of major depression by warning people weeks or even...

Think before you type: Study warns AI chats may expose your private life

As artificial intelligence chat tools become part of daily life at work, school, and home, many people may be sharing more personal information than...

New tree-inspired cooling method could solve AI data center heat crisis

Artificial intelligence is transforming the world, but it comes with a hidden cost: enormous heat. Modern AI data centers pack thousands of powerful processors into...

Meet the new TikTok, same as the old TikTok

After a legislative ban, a trip to the Supreme Court, and repeated deadline extensions, TikTok recently made a deal to spin out an American...

Smart earbuds could soon detect early signs of cognitive decline

Earbuds may soon do much more than play music or take phone calls. According to a new international study, the same devices millions of people...

New device can hide your heartbeat from radar surveillance

Imagine sitting at your desk during a normal workday. You log into your computer, unaware that a built-in sensing system could be tracking your...

This hair-thin glass microphone can hear electrical sparks before power failures happen

Researchers have created a microphone so thin it looks like a human hair, yet tough enough to survive temperatures as high as 1,000°C. Made entirely...

This computer uses light instead of electricity—and it solves problems faster than quantum machines

Researchers at Queen's University have built a new kind of computer that uses light instead of electricity—and it works at room temperature, stays stable...

Scientists achieve near-perfect light transmission on silicon chips

Optical fiber quietly powers much of the modern world. It carries internet traffic across oceans and cities with astonishing efficiency, letting light travel kilometers with...

This 4D-printed smart skin can transform its shape and reveal hidden images

Most synthetic materials are made to do just one or two things. Once they are created, their properties rarely change. A research team at Penn...