Stephen Petranek
Author of “How We Will Live on Mars,” from Simon & Schuster
Stephen Petranek's talk “10 Ways The World Could End Suddenly” is one of the most popular TED talks of all time, and his Mars TED talk has been watched 3.5 million times. Stephen is co-executive producer of the National Geographic’s Mars documentary series, and science advisor to the series. He was editor-in-chief of the Discover for eight years, editor-in-chief of The Washington Post Magazine for more than a decade, senior editor at Life Magazine, and editor-in-chief of Breakthrough Technology Alert, a science-based newsletter for investors.