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
Adam (given name) spelled Addams). In other languages there are similar surnames derived from Adam, such as Adamo, Adamov, Adamowicz, Adamski etc. In Arabic, Adam (آدم) means "made from the earth/mud/clay". Adam (given name) Adam is a common masculine given name. The personal name "Adam" derives from the Hebrew noun "ha adamah" meaning "the ground" or "earth". Its Quranic and Biblical usage has ensured that it is also a common name in all countries which draw on these traditions. It is particularly common in Christian and Muslim majority countries. In most languages its spelling is the same, although the pronunciation varies somewhat. Adán