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Kids in the U.S. get most of their calories from ultra-processed foods, which are tied to health problems. Now, scientists are finding that kids don't all react to these foods in the same way.

When it comes to rice and pasta, dietitians recommend eating brown or whole grain because they're more nutritious. But you can create a super nutrient in white rice and white pasta. Here's the trick.

The company's Claude chatbot is one of the few AI systems cleared for use in classified settings. But a standoff between Anthropic and the Trump administration is putting its government work at risk.

After catastrophic flooding claimed 117 lives and reshaped the Guadalupe River, volunteers and biologists are planting thousands of native cuttings along its banks, marking a turning point in the long work of restoration.

Russia is stepping up covert attacks across Europe — rail sabotage, drones, cyberstrikes — testing NATO. Polish officials warn "disposable agents" are sowing fear and weakening support for Ukraine.

Ski mountaineering will make its Olympic debut this year, the first winter sport to do so since 2002. Skeleton, luge, ski jumping and moguls are also getting new events.

Kid, meaning a young goat, is a word that was borrowed from the Vikings around the 9th century. Centuries later, it came to mean a child and a teasing joke.

Parkinson's disease appears to disrupt a brain network involved in everything from movement to memory.

Homeless women face unique health challenges with few dedicated resources. And as the number of women experiencing homelessness in Los Angeles continues to grow, Dr. Mary Marfisee hopes to bring them lifesaving resources.

Experts warn that the expiration of a long-standing nuclear arms control treaty between the two superpowers could mark the start of a new nuclear rivalry.