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
End of the Earth: Voyage to Antarctica End of the Earth: Voyage to Antarctica Creating End of the Earth: Voyage to Antarctica is a 2004 book by Peter Matthiessen published by National Geographic Books. The book describes two journeys taken by Matthiessen to Antarctica: the first is embarked upon from Tierra del Fuego in South America to the Antarctic Peninsula west of the Weddell Sea and the second is from Tasmania to the Ross Sea. The second journey was, therefore, taken to a position that is almost on the other side of the continent of Antarctica. These two trips were made between 1998 and 2001. Matthiessen discusses