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
Behold the Earth Behold the Earth Behold the Earth is a feature-length musical documentary film that inquires into America's estrangement from nature, built out of conversations with leading biologists and evangelical Christians, and directed by David Conover. The film made its debut at the 2017 DC Environmental Film Festival. Director David Conover described the evolution of the film idea as follows: Many Americans share a vision of the rural past, which goes something like the fable at the beginning of Rachel Carson's book… Once upon a time, we lived in close proximity to the outdoors, to what biologist E.O. Wilson and many others