海洋酸化：CO2问题的另一面
二氧化碳排放正改变着海洋的化学平衡，卡罗尔•特里解释说，酸化将威胁海洋生态系统，而全世界有千百万人依靠它生活。
Ocean acidification: the other CO2 problem
Carbon dioxide emissions are altering the chemical balance of the oceans, as acidification threatens the marine ecosystems that provide livelihoods to millions around the world. Carol Turley explains.
