Atlantic contributing editor Ellen Ruppel Shell teaches at Boston University, where she co-directs the Graduate Program in Science Journalism. She writes on science, medicine, the media, economics, and sometimes even sports and the arts, and tends to focus on the underlying cultural and societal implications. She is the author most recently of Cheap: The High Cost of Discount Culture" (Penguin, July 2009); the distilled version of the book can be watched here.