Research finds culprit behind mass sea star deaths

Sea stars on the west coast of North America have been decimated by a wasting disease. For more than a decade, scientists did not know what was causing it. But new research published in the journal Nature has identified the culprit. The World's Host Carolyn Beeler speaks with scientist Alyssa Gehman about the findings and what it means for the species' recovery.

This story originally aired on Aug. 7, 2025.