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Researchers find a culprit in sea stars' decline

A mysterious disease has been ravaging sea stars off the West Coast, leading to loss of entire kelp forests. Now, researchers have finally identified the culprit, opening new strategies for combatting it.

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Lauren Sommer covers climate change for NPR's Science Desk, from the scientists on the front lines of documenting the warming climate to the way those changes are reshaping communities and ecosystems around the world.