Parts of the Great Barrier Reef (GBR) will never fully recover from repeated bleaching of its corals, caused by spikes in the water temperature, scientists say. Key points: Repeated bleaching means many corals do not have time to recover Even pristine reefs are not immune Researchers call for tough action on global warming to save Great Barrier Reef Terry Hughes of James Cook University and colleagues analysed the impact of three major bleachings in the past two decades on Australia's reef. The research confirmed last year's event, which also affected reefs in places like Japan and parts of the Caribbean, was the worst on record. With even the most pristine areas affected by heat, the researchers warned tough action on global warming was needed to ensure the reef's future. "Globally these events have become the new normal, and the time between them is getting shorter and shorter," Dr Hughes said. http://www.abc.net.au/news/science/...w-as-bleaching-becomes-the-new-normal/8353030 A question to those who do not believe in global warming What do you think is causing the death of the reefs is it A) conspiracy by scientists to make more money B) ABU. Anybody But US C) Obama did it D) Don't care because it will not affect me in any way E) What problems??