National Geographic Explorer Paul Salopek has covered a lot of ground: some 14,000 miles — on foot — through 21 countries so ...

National Geographic Explorer Paul Salopek has traveled — on foot — through 21 countries, in a walk that’s taken eleven years so far. Traveling at a human speed has given him glimpses of things people ...

In the U.S., place names are standardized by the U.S. Board on Geographic Names, which is part of the U.S. Geological Survey, the agency in charge of making maps. You can listen to more articles ...