iBioSeminars sponsors leading scientists in a regular scientific update on news from the world of biologists.  Their videos are very nice, specifically they know how important it is to see the presenter in front of the content so you are more actively engaged in the material.  This latest update comes from Dr. Nancy Knowlton from Scripps Institution of Oceanography, where she provides an excellent summary of the major dangers to coral reefs today, and why the combination of all of them could potentially spell disaster for the world’s underwater ecosystems.