World's Coral Reefs Facing Increasing Pressure

All coral reefs go through bleaching episodes, and these episodes of drought or extreme heat can hurt even the healthiest of reefs. But climate change means more heat, more often, and new research is showing the world's reefs do not have time to recover. VOA's Kevin Enochs reports.

© La Voix de l'Amérique - samedi 27 janvier 2018