"Tells the story of humanity's explorations, taking the reader into the lives of some of the most intrepid people ever known. Focusing on 50 of the world's greatest explorers, with shorter entries on 60 of their helpers and companions, the book is filled with first-person accounts in the explorers' own words, rare maps, specially commissioned photographs, and artworks [to] re-create history's greatest expeditions"--Publisher marketing.