In early 2013, National Geographic Explorer Paul Salopek began an epic walk, following the path of the first human migration out of Africa about 60,000 years ago. Host Marco Werman speaks with Salopek, who's now two-thirds of the way along his global journey. Today, he talks about his first steps at the beginning of the walk in the Great Rift Valley in Ethiopia.
The World's hosts Marco Werman and Carolyn Beeler talked with journalist Paul Salopek about his experiences walking across China and beyond as a part of his "Out of Eden Walk" project.