Teen use of AI chatbots is growing, and psychologists worry it's affecting their social development and mental health. Here's what parents should know to help kids use the technology safely.

TikToks are everywhere (well, except countries like Australia and India, where they've been banned.) We talk to the creators of some of the year's most popular reels from the Global South.

These stunning photos include a polar bear in a Chinese zoo, a teen in Zambia facing an uncertain future, Mongolian kids watching TV in a tent, a chef prepping a bowl of good-for-you soup.

Our most-viewed Instagram videos include reports from a Rhode Island factory that makes special food for malnourished children and from a tournament for soccer-playing "grannies."

If your New Year's resolution is to start resistance training, Life Kit is here to help. Sign up for our Guide to Building Strength and get a month of expert tips on how to create a lasting routine.

Our most popular global health and development stories in 2025 covered the human impact of the upheaval in U.S. foreign aid, surprising news about familiar diseases and the beauty of earth captured by drone cameras.

A small U.S. foreign aid program worked for nearly two decades to help countries eliminate tropical diseases that aren't known to many people. The Trump administration ended the program in January.

In Kashmir, December 21 is said to mark the start of the 40 harshest days of winter. A woolen robe called a pheran is key to keeping warm — and a reminder of how to face and overcome hardships.

The late, great Fela Kuti is known as the "Black President" for his role as both a musical and a political leader. Now he has become the first African artist to get this Grammy honor.

Bethany Kozma leads a key global health office at the Department of Health and Human Services. In past experience in the public eye, she's campaigned against abortion and gender-affirming care.