Climate change could disrupt nearly half of the world's groundwater supply within 100 years.
A new study examines the impact of fracking on streams in Arkansas.
Iqaluit is a booming Arctic city.
If current trends continue, many freshwater lakes in the US and Canada will be too salty for human use or aquatic life.
Twenty years ago, Gustavo Mizushima, whose family moved from Japan to Bolivia in the aftermath of World War II, discovered giant clams on his fish farm. No one knows how they got there, but the mollusks are now in demand from specialist Santa Cruz...
NASA just published photos of the world's largest sub-sub-sub island.
Arapaima, one of the oldest fish in the Amazon, feeds on other fish and can jump out of the water to grab a snack—like a bird or small land mammal. Its massive scales are used as nail files by people living in the area. But because it's also very tasty...