Thomas Kostigen is the author of You Are Here: Exposing the Vital Link Between What We Do and What That Does to Our Planet and the coauthor of the New York Times bestseller The Green Book. He writes the "Ethics Monitor" column for Dow Jones Market Watch and the Better Planet column and blog for Discover magazine. He is a longtime journalist and former Bloomberg News editor. Kostigen has been writing about global warming, the environment, social issues, and government policies for two decades. He lives in Santa Monica, California.