A new hypothesis of mountain growth challenges plate tectonics.
Satellites show severe deforestation in a rare monarch butterfly overwintering site.
New studies maintain that the tiny hominid is a distinct species.
What happens when rivers are allowed to flow on their own?
The most complete malaria risk map in 40 years will help focus treatment.
Most coral reefs are badly degraded, but Kingman Reef is the picture of health.
The innermost planet like we’ve never seen it before.
The life-threatening pathogen MRSA is evolving in ways that may affect its virulence.
A new study finds that mangrove forests and shrimp farms can coexist--to some extent.
A new study shows that pollutants can take a century or more to show up in rivers and streams.