New Scientist: The worlds coral reefs are in the midst of a mass die off a white death spanning the globe. Thats the stark message from reports about the impact of a monster El Nio that is warming the worlds oceans. With hundreds of millions of people relying on coral reefs for their livelihood, as well as their safety, since reefs provide protection from storm surges, exactly what is going to happen and how it will affect them is more than an idle question. Heres our guide. Whats causing the coral...