The Oceans on Acid
B. McPherson NOAA's Explanation of Our Changing Oceans Most of us are by now aware of the increase in carbon dioxide in our atmosphere. We have been told of the Greenhouse Effect on the air we breathe. A less well known effect of the increasing carbon dioxide in the air is an increase in acidity in the world’s oceans. For most of the geological history of the Earth, slow change occurs with punctuations of extensive extinctions of life both on land and sea. Many natural phenomena can trigger a mass extinction. Some scientists are concerned that humans may be about to inadvertently cause a collapse of systems in the oceans which will in turn, hit humanity like a tsunami. Since the Industrial Revolution there has been increasing dependence on the burning of fossil fuels – oil, coal, gas – to power the machines that have transformed our lives. One of the bad side effects of this is the release of carbon dioxide gas. This is a normal cog in the Carbon Cycle. The oc...