Australia is nearly four times as large as Greenland. If they were much closer in area, Greenland might have more of a case for continent status (and Australia for island status). As it is, the vast difference between the two makes for a good dividing line. read more
Everyone agrees that everything smaller than Australia is an island. Australians themselves are divided, and often claim that Australia is both the world's largest island and the world's smallest continent. So, there are good reasons to assert that Australia is a continent and not an island. read more