Lake Tahoe, one of the clearest, cleanest lakes in the US, shows how that the issue of microplastics goes way beyond the oceans.

The Dead Sea's salty summer "snow" has been a mystery, but new research explains what's going on.

"If we want to preserve our beaches, shorelines, and rivers we need to know which areas are actually hotspots that need conserving."

A new global water map is so advanced that scientists could use them to predict which rivers are most likely to flood during heavy rainfall.

Evidence that the seals in Alaska's Iliamna Lake are one of a kind could prevent a controversial mining project from going forward.

"...not all high-latitude lakes are big chimneys of carbon to the atmosphere," new research finds.

Daphnia, called water fleas, gain protection from parasites from toxins in the cyanobacteria they eat. Are they self-medicating?