David Borgenicht is a writer, editor, publisher, and coauthor of all the books in The Worst-Case Scenario Survival series. He lives in Philadelphia, U.S.A, with his son and daughter.Hena Khan has written numerous books for children, including The Worst-Case Scenario Ultimate Adventure: Mars. She lives in Rockville, Maryland, U.S.A. Ed Stafford spent 859 days walking the 4,000-mile trek along the entire length of the world's longest river, the Amazon. He is the author of Walking the Amazon: 860 Days,. He lives in London. Yancey Labat started at Marvel Comics and has illustrated many books for children. He lives in Ithaca, New York, with his wife and daughter.