Like the lead character of “Project Hail Mary,” some scientists are proposing ways that life might exist beyond a star’s ...

Scientists have found the oldest direct evidence for tectonic motion on Earth by more than half a billion years ...

Magnetic crystals provide the earliest evidence yet of the plate tectonics that likely made Earth habitable, pushing its start back by 140 million years.

If we're to find extraterrestrial life in the universe, astronomers have pinpointed the best places to look for it. They have ...

These three exoplanets are among the least dense ever found, and all attempts to probe their atmospheres have been blocked by a mysterious smog.

From freshwater providers to cultural touchstones, a look at the many changing identities of glaciers.

The Gulf of Panama’s seasonal upwelling failed in 2025 for the first time in at least 40 years, breaking a long-standing ocean pattern.

NPR's Ailsa Chang speaks with archaeologist Gary Feinman about new findings that show democracy existed throughout the ancient world and was not exclusive to Mediterranean Europe.