Suicide: unexpected coral killer

A mysterious disease is causing the corals of the Great Barrier Reef to kill themselves - and scientists are battling to find out why.

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<p><a href="http://www.physorg.com/news93627396.html">Suicide: unexpected coral killer</a></p> <p>A mysterious disease is causing the corals of the Great Barrier Reef to kill themselves - and scientists are battling to find out why.</p>