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
Bones of the Earth paradox, its tangles and attenuations mercifully forgotten, a love of the world is retained - a deep unselfish love of learning the world and all its creatures. Bones of the Earth Bones of the Earth is a 2002 science fiction novel by Michael Swanwick. It was nominated for the Nebula Award for Best Novel in 2002, and the Hugo, Campbell, and Locus Awards in 2003. Expanded from his Hugo Award-winning story "Scherzo with Tyrannosaur", "Bones of the Earth" spans geologic time, not just centuries but millennia, from the pre-historic past to the distant and unknown future. Most of the novel's