Miller published a book on the subject, "Blood Money: Wasted Billions, Lost Lives and Corporate Greed in Iraq." In 2008, Miller was one of the founding employees of ProPublica, an independent, non-profit start-up dedicated to investigative reporting. While at ProPublica, Miller has published investigative projects with various news organizations, including the "Los Angeles Times", "The New York Times", "The Washington Post", "Newsweek", "Salon", National Public Radio, "This American Life", ABC News "20/20" and PBS' "Frontline". Miller is a leading figure in innovation in journalism, especially in transparency, trust and data-driven journalism. He delivered the U.S. Army Creekmore Lecture in 2007, and has taught at the University of Southern California, Columbia University, Stanford University, the University of California at Berkeley and the College of Charleston. He spent a year at Stanford University as a Knight Fellow, studying transparency and new models of journalism. Miller has served as treasurer and board member of Investigative Reporters and Editors, or the IRE, the nation's largest organization of investigative journalists. Miller has won numerous local, national and international awards. In 1999, he won the John B. Oakes Award for Environmental Journalism for his coverage of runaway growth in the Santa Monica Mountains. In 2004, he was awarded the Livingston Award for international reporting, one of the most competitive and prestigious reporting prizes in American journalism, for his coverage of children and war. In 2005, he won an Overseas Press Club award. In 2009, he won an Investigative Reporters and Editors award. In 2010, he won a George Polk award with Daniel Zwerdling of National Public radio for his work covering traumatic brain injuries in the U.S. military. In that same year, he was also given the Selden Ring Award for investigative reporting on private contracting in Iraq and Afghanistan. In 2015, Miller, Marcela Gaviria, and colleagues from ProPublica and Frontline were awarded two News & Documentary Emmy Awards, the Robert F. Kennedy Center For Justice and Human Rights award for their work documenting the support given by the Firestone Company to Charles Taylor, Liberia's former president and a convicted war criminal, during that country's civil war. In 2016, Miller, along with Ken Armstrong of The Marshall Project, won the Pulitzer Prize in Explanatory Reporting for an article on the Washington and Colorado serial rape cases.