The Lost Worlds of Planet Earth Ortelius hypothesized the idea that land masses may have been connected in the past, Alfred Wegener who hypothesized the idea of a super-continent Pangaea and continental drift despite the prevailing idea of flooded land-bridges at the time, and Bruce C. Heezen and Marie Tharp who discovered the Mid-Atlantic Ridge that supported the theory of plate tectonics. Tyson describes how the landmasses of the earth lay atop the mantle, which moves due to the motion and heat of the earth's outer and inner core. Tyson moves on to explain the asteroid impact that initiated the Cretaceous–Paleogene extinction event, leaving small mammals
The Continent Makers land area of the overpopulated twenty-second century Earth by creating new continents through the manipulation of geological forces. The project's initial goal is to raise a new land mass to be called Gamanovia around the existing Ascension Island in the South Atlantic. The name of the proposed new continent was chosen to honor fifteenth century Portuguese navigator Vasco da Gama, the first European to navigate the region's waters, and for João da Nova, who discovered Ascension Island a few years later. A sinister group concealing itself under the mask of the bogus Churchillian Society, supposedly dedicated to proving that the