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Searching for small fossils in big rocks requires specialized tools --tools that scientists could also use to look for evidence of life on Mars in rocks that may be similar on both planets.

In 1975, researchers met to discuss the emerging field of biotechnology. The issues surrounding the field today are familiar.

"Once you get the funk out there, it's not going back. You can't put it back in the box," says filmmaker Stanley Nelson. His new Independent Lens documentary is out now.

National Adopt a Shelter Pet Day is on April 30. To celebrate, NPR wants to know how your pet has changed your life. We would also love to see photos of your purr-fect fur-ever friend.

The official numbers are in: 2024 is the hottest year on record. Climate change is the main culprit. But there might be something else going on, too.

President Trump has nominated Neil Jacobs to head NOAA. Some former NOAA employees are concerned about Jacobs' scientific integrity after his prior involvement in "Sharpiegate."

When a 5.2 earthquake hit near San Diego, the San Diego Zoo Safari Park caught its elephants on video taking action to protect their young, forming what experts call an "alert circle."

San Diego resident Yvonne Elkin was determined to get her $100 dollars back.

Young, male capuchin monkeys have started kidnapping the babies of nearby howler monkeys. Why? Maybe boredom.

Despite improvements in air quality in past decades, 156 million Americans still breathe in too much soot or ozone, says the annual State of the Air report from the American Lung Association.