Seven Worlds, One Planet is about the seven continents and their wildlife, and how these great continental landmasses came to be where they are on the surface of the Earth. The story starts about 200 million years ago, when the supercontinent Pangaea split apart, a geological process that has not stopped. Even today, the continents are moving across the face of the Earth, each carrying its own assemblage of plants and animals. Now, however, there are signs that the continents are beginning to reassemble. Australia, for example, is heading north, where it will collide with South-east Asia, pushing up a new mountain chain and increasing the size of Eurasia. Eventually, all the continents will coalesce, forming a new supercontinent, when the geological cycle will start all over again.…