<p>WASHINGTON — Scientists say they have at last solved the mystery of what killed more than 5 billion sea stars off the Pacific coast of North America in a decade-long epidemic.</p>

The culprit is bacteria, and the knowledge could help devise ways to help the species recover.{ai:summary}<p>Researchers have identified the cause behind the deaths of over 5 billion sea stars along the Pacific coast of North America, resolving a decade-long mystery. The findings shed light on the epidemic that significantly impacted marine ecosystems. #science</p>

Scientists have solved the mystery of what killed more than 5 billion sea stars

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