Corals: the largest organism on the planet

From providing much of the oxygen we breathe to hosting myriad forms of life, corals are a critical part of our planet s eco-system. But they are dying. Click here to subscribe to The Economist on YouTube: http://econ.trib.al/rWl91R7 The world’s OCEANS cover 70% of our planet, are the frontline in the battle against climate change, and yet are relatively unknown. Dive down to their deepest depths to discover how scientists are using the latest technologies to uncover the vital mysteries that they have hidden. Check out Economist Films: http://films.economist.com/ Check out The Economist’s full video catalogue: http://econ.st/20IehQk Like The Economist on Facebook: https://www.facebook.com/TheEconomist/ Follow The Economist on Twitter: https://twitter.com/theeconomist Follow us on Instagram: https://www.instagram.com/theeconomist/ Follow us on LINE: http://econ.st/1WXkOo6 Follow us on Medium: https://medium.com/@the_economist