In recent years there has been a controversy over the shrinking Arctic ice cover. Besides disputing the extent and the significance of the loss of ice, Denialists “refuted” scientific observations by referring to the Antarctic. In parts of the Antarctic ice cover was increasing, which was enough to provide talking points to Denialists who did not consider the whole picture.
Yesterday scientists reported that the collapse of large parts of the ice sheet in Western Antarctica appears to have begun. The collapse, which appears to be irreversible, will cause a sea level rise of such magnitude that many of the world’s coastal cities would eventually have to be abandoned.