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
Journey to the Past to sustain the note and insisted that it remain in the song. The song was originally dubbed into 28 languages for international release. Along the years, the number of foreign versions has grown, with some new dubs and, beside the official dubs, several local TV stations made their own dub, or re-dubbed an existing version, in local languages including Albanian, Egyptian Arabic, Czech, Polish, Taiwanese Mandarin, Korean, Slovak, and Vietnamese. Identified as a character song, "Journey to the Past" is the first song Anya sings in "Anastasia". In the film, 18 year-old orphan Anya grows up unaware that she is