Huw Lewis-Jones, PhD, is a historian of exploration who travels regularly in the Arctic and Antarctica as a polar guide. He was formerly curator at the Scott Polar Research Institute, Cambridge, and the National Maritime Museum, London. He is the author of several books on the ocean and exploration, including Explorers' Sketchbooks. He lives by the sea in Cornwall, England. Captain Don Walsh USN (RET), PhD, is an oceanographer, explorer, and former submarine captain. In 2001, he was elected to the United States National Academy of Engineering. He is currently the honorary president of the Explorers Club.
