Animal Magnetism: How Salmon Find Their Way Back Home

National Public Radio: Before they end up filleted and sautéed on your dinner plate, salmon lead some pretty extraordinary, globe-trotting lives. After hatching in a freshwater stream, young salmon make a break for the ocean, where they hang out for years, covering thousands of miles before deciding its time to settle down and lay eggs in the same stream they were born. So how do these fish find their way back to their home river? According to one theory, it's all about magnetism. When salmon are young, the theory goes,......

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