In early 2013, National Geographic Explorer Paul Salopek began his epic walk, following the path of the first human migration out of Africa 60,000 years ago. The World’s Host Carol Hills speaks with Salopek — now two-thirds through his global journey — about his experience walking through Djibouti and sailing through the Bab al-Mandeb Strait, the entrance to the Red Sea.

This story originally aired on Feb. 23, 2024.