Founded more than 112 years ago "for the increase and diffusion of geographic knowledge," the National Geographic Society has chronicled the exploits of some of the most famous explorers of the 20th century, and often helped fund those efforts. Roald Amundsen and Robert Byrd. Hiram Bingham and Howard Carter. Charles Lindbergh and Alan Shepard. Jacques Cousteau. Edmund Hillary. Will Steger. Bob Ballard. John Glenn. In addition, the Society has reported...