Katie Hafner writes about health care, with a focus on the aging population, for the Science section of The New York Times, which she has been writing for since 1991. She started as a freelancer from Berlin, covering German reunification, and was on staff for ten years, covering technology for the Circuits section. Hafner has also worked at Newsweek and BusinessWeek and written for The New York Times Magazine, Esquire, Wired, The New Republic, and O, the Oprah Magazine. Her books include Cyberpunk; Where Wizards Stay Up Late; The House at the Bridge: A Story of Modern Germany; A Romance on Three Legs; and the recent memoir, Mother Daughter Me.