And the sad thing is that, as these coral reefs are lost -- and scientists tell us that any level of carbon dioxide in the atmosphere above 350 parts per million is too dangerous for the survival of these reefs -- we are not only risking the extinction of the entire coral species, the warm water corals, we're not only risking a fourth of all fish species which are in the oceans,
坏消息在于，这些珊瑚礁正渐渐消失-- 据科学家说， 若大气中二氧化碳含量超过350ppm 就会严重危及珊瑚礁的生存-- 我们不仅仅是拿 整个暖水海洋珊瑚种群的生存在冒险， 不仅仅是拿海洋中四分之一鱼类的生存在冒险，