Mysterious underwater disease ravages Gulf Coast’s coral

http://www.cbsnews.com/video/mysterious-underwater-disease-ravages-gulf-coasts-coral/

A devastating and mysterious underwater disease is sweeping down on the coast of Florida and infecting the regions’ coral. Scientists do not yet know what the disease is, but it has already infected half of the coral species in the region. For our “Earth Matters” series, Mark Phillips reports from the Gulf of Mexico, where some scientists are fighting back.