Stephen L. Petranek

Stephen Petranek is an American writer, and editor of Breakthrough Technology Alert. He previously edited Discover, and The Washington Post's magazine. He was the founding editor and editor in chief of This Old House magazine for Time Inc., and was senior editor for science at Life magazine, and group editor-in-chief of Weider History Group’s ten history magazines. His TED talk, 10 Ways the World Could End, has been viewed over a million times.