ScienceDaily: Coral reef survival is balancing on a knife edge as the combined effects of ocean acidification and ocean warming events threaten to push reefs to the brink of extinction this century, warned a meeting of leading scientists. Organised by ZSL, the International Programme on the State of the Ocean (IPSO) and the Royal Society, the meeting identified the level of atmospheric CO2 predicted to result in the demise of coral reefs. At anticipated rates of emission increase, it is …