[5] He was responsible for establishing definitive editions of Twain's published and unpublished writing, including letters, notebooks, and the novel, A Connecticut Yankee in King Arthur's Court.
It investigated the construction of the largest medical waste incinerator in New York State, in the Port Morris section of South Bronx, in 1991.
The work turned into a crusade that led to the indictment of the chair of the local community board, a congressional hearing, and, eventually, to the dismantling of the incinerator, which contrary to its developer's claims, was poisoning the air.
[6] As a result, the New York City chapter of the Society of Professional Journalists, The Deadline Club, honored The Riverdale Press with its most prestigious award for community service.
During his time at Hunter College, Stein founded The Hunts Point Express, a newspaper and online news outlet staffed by students and serving the poorest neighborhoods in the South Bronx.