For Greenpeace, he has completed an in-depth documentary project on the chemical disaster at Bhopal in 1984, which he covered as a journalist with "India Today" in 1984, and on its ongoing effects on the lives of gas victims. This work resulted in a book, "Exposure: A Corporate Crime" and three exhibitions that toured Europe, America, India and southeast Asia after 2004, the 20th anniversary of the disaster. Rai wanted the exhibition to support the many survivors through creating greater awareness, both about the tragedy, and about the victims – many who are still uncompensated – who continue to live in the contaminated environment around Bhopal.