Christian Science Monitor: If the rising level of carbon dioxide in the earth’s atmosphere is a slowly ticking time bomb, some scientists say, the CO2 building in seawater is a depth charge about to explode. The world’s oceans are growing more acidic at an increasing – and some say alarming – rate. More and more environmentalists and scientists are saying it may take a severe lowering of CO2 levels to keep ocean life from facing major disruptions, including possible mass extinctions of species. Seawater …