Rob Knight is a Professor of Pediatrics and Computer Science & Engineering and Director of the Microbiome Initiative at the University of California, San Diego. He is cofounder of the American Gut Project and the Earth Microbiome Project. Stephen Petranek's career of more than forty years in the publishing world is marked by numerous prizes and awards for excellent writing on science, nature, technology, politics, economics, and more. He has been editor-in-chief of the world's largest science magazine, Discover , the editor of The Washington Post 's magazine, founding editor and editor-in-chief of This Old House magazine for Time Inc., 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. He is now the editor of Breakthrough Technology Alert , for which he finds the investment opportunities that create true value and move the human race forward. Siddhartha Mukherjee is the author of The Emperor of All Maladies: A Biography of Cancer , winner of the 2011 Pulitzer Prize in general nonfiction, and The Laws of Medicine .

He is the editor of Best Science Writing 2013. Mukherjee is an assistant professor of medicine at Columbia University and a cancer physician and researcher. A Rhodes scholar, he graduated from Stanford University, University of Oxford, and Harvard Medical School. He has published articles in Nature , The New England Journal of Medicine , The New York Times , and Cell . He lives in New York with his wife and daughters. Visit his website at: SiddharthaMukherjee.com.