Changing Planet: Coral Special

The coral reefs of our oceans are at a tipping point.Consecutive bleaching, caused by warming seas are leaving them with challengingly short periods of time to restore themselves.What's more it's galvanising the science community to experiment with more and more outlandish and innovative techniques that just may hold the key to saving the coral. The one common aim is that the solutions have to be deployable at scale and at speed. In this Maldives special, Steve Backshall catches up with the scientists who are making ground-breaking discoveries to save the coral reefs.