Why there is hope that the world's coral reefs can be saved

From coral farming to 3D printing, scientists are using novel methods to save a vital part of our ecosystemFor most of us, the colourful, otherworldly marinescapes of coral reefs are as remote as the alien landscapes of the moon. We rarely, if ever, experience these underwater wonderlands for ourselves – we are, after all, air-breathing, terrestrial creatures mostly cocooned in cities. It is easy, therefore, not to notice the perilous state they’re in: we’ve lost 50% of coral r