[Music] Since the formation of the Earth 4 and a half billion years ago, there's been five major extinction events. We currently stand on the breaking tip of the sixth great wave of extinction. And if we don't want the next generation, our children and grandchildren to inherit a world that is less diverse, less beautiful than the one that we inherited.Then we got to try and preserve some of those last remaining wildernesses and biodiversity hotspots we have left. Now, an idea that's gaining a lot of tractio ...