Thousands of scientific papers have used data collected by users of the platform iNaturalist, according to new research.

New observations fail to confirm signs of life in the atmosphere of the distant planet K2-18b. They also raise questions about what it will take to detect biology light-years away.

© N. Madhusudhan/University of Cambridge, via Agence France-Presse — Getty Images

The discovery, in a bizarre animal not closely related to birds, could change how scientists think about the origin of feathers.

A new global atlas of underground fungi suggests that some surprising biodiversity hot spots lie hidden beneath our feet.

© Tomas Munita for The New York Times