Add Yahoo as a preferred source to see more of our stories on Google. Finding black streaks or splotches in the sand while walking along a Michigan beach may have you wondering if you've stumbled ...

Researchers have taken a step closer to solving one of nature's most remarkable mysteries: How do salmon, when it's time to spawn, find their way back from distant ocean locations to the stream where ...

Scientists suggest magnetite crystals that form inside specialized receptor cells of salmon and other animals may have roots in ancient genetic systems that were developed by bacteria and passed to ...

Something unusual keeps turning up in marine sediments. These are large crystals of magnetite, formed by biology rather than geology, and preserved fo.

Finding black streaks or splotches in the sand while walking along a Michigan beach may have you wondering if you've stumbled across some sort of pollution, but it's actually a completely natural ...