author : Alan Weismanwebsite : http://www.worldwithoutus.comAlan Weisman teaches international journalism at the University of Arizona. He is also an award-winning journalist whose reports have appeared in Harper’s,The New York Times Magazine, The Atlantic Monthly,Discover, and on NPR, among others. Formerly a contributing editor to the Los Angeles Times Magazine, he is now a senior radio producer for Homelands Productions. He is the author of The World Without Us.