Report: Coral bleaching at highest level ever recorded / More than 80% of world's coral reefs hit by worst bleaching event in history / Report: Coral bleaching at highest level ever recorded / Global coral bleaching has now hit 84% of ocean's reefs in biggest-ever event / 84% of the world's coral reefs hit by worst bleaching event on record / Coral restoration projects failing: One-third ineffective and unlikely to scale, study finds / 'The ultimate circular economy': how coral holobionts conjure magnificence from nothing / Coral reefs in Vietnam face collapse. Can conservation efforts turn the tide? / Ancient reef-building corals had a little help from microbial friends