Permafrost sounds permanent, but there’s a catch: the top portion, called the active layer, freezes and thaws every year. In ...

Humans may be accelerating the rate at which organic matter decomposes in rivers and streams on a global scale, according to a new study. That could pose a threat to biodiversity in waterways around ...

CLIMATEWIRE | Atlantic salmon are known for making one of nature’s most remarkable journeys. Each year, hordes of them surge from the ocean into Canada’s rivers and streams, swimming back to their ...

Each spring, river herring populations migrate from Massachusetts coastal waters to begin their annual journey up rivers and ...