A type of freshwater algae, known as "rock snot," that infiltrates river bottoms and clumps on rocks is not an invasive species introduced into waterways by humans, a new study finds. The organism has ...

The only thing between these daring travelers and the 328-foot drop off the world’s largest waterfall is a slimy rock lip. No, this isn’t clever photo trickery. It is called the Devil’s Pool and it is ...

Pollutants that act like hormones flush into lakes and streams worldwide from farm runoff and treated sewage. Scientists worry about these compounds' presence in aquatic food webs because studies have ...