Book excerpt: People have been pushing boundaries in search of fame and fortune for centuries, from ancient times to the present day. A quest for knowledge has been another impetus for testing personal and universal limits, as has the thrill of adventure. Within these pages, readers will discover detailed accounts of the lives of explorers and adventurers throughout the ages, men and women whose journeys have been remarkable, whatever their motivation. * Maps provide visual context * Vivid illustrations depict seminal figures and events * Glossaries explain key terms and ideas