continental drift. noun. geology. the theory that the earth's continents move gradually over the surface of the planet on a substratum of magma. The present-day configuration of the continents is thought to be the result of the fragmentation of a single landmass, Pangaea, that existed 200 million years ago.
The Wonderful Wizard of Oz is an American children's novel written by author L. Frank Baum and illustrated by W. W. Denslow, originally published by the George M. Hill Company in Chicago on May 17, 1900.
Jupiterimages/Brand X Pictures/Getty Images. Mehmet C. Oz, better known as Dr. Oz, first appeared on the Oprah show in 2004. In 2009, The Dr. Oz Show debuted, co-produced by Oprah's Harpo Productions. Dr. Oz received his education at Harvard and the University of Pennsylvania.