In 2001, his investigative series on a PGA Tournament golf course in the Bronx exposed the biggest boondoggle in the history of the New York City Parks Department. In 2009, he won The American Society of Landscape Architects’ Bradford Williams Medal for a series of articles that he wrote about parks in New York City. A Nation Investigative Fund article he wrote in 2010 for The Nation magazine was the first to expose the major flaws in the landmark 2008 state attorneys general settlement with Bank of America. Ulam’s work has appeared in publications such as The New York Times, Discover, Macleans, The National Post of Canada, and Archaeology.