In the Pacific Northwest, some tributaries salmon travel through to spawn are so hot that it’s threatening their migration. In some places, biologists have trucked the fish to cooler water. In the ...

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Salmon are an iconic species with deep cultural ties to tribes across California, but they have seen steep population ...

Traces of pharmaceutical drugs are finding their way into waterways around the world. A new study in the journal Science suggests that this kind of pollution can mess with salmon migration in somewhat ...

Study reveals commonly detected environmental levels of clobazam -- a medication often prescribed for sleep disorders -- increased the river-to-sea migration success of juvenile salmon in the wild.