In 1989, Rifkin brought together climate scientists and environmental activists from 35 nations in Washington, D.C. for the first meeting of the Global Greenhouse Network. In the same year, Rifkin did a series of Hollywood lectures on global warming and related environmental issues for a diverse assortment of film, television, and music industry leaders, with the goal of organizing the Hollywood community for a campaign. Shortly thereafter, two Hollywood environmental organizations, Earth Communications Office (ECO) and Environmental Media Association, were formed.