Darkness in El Dorado: How Scientists and Journalists Devastated the Amazon is a polemical book written by author Patrick Tierney in 2000, in which the author accuses geneticist James Neel and anthropologist Napoleon Chagnon of conducting human research without regard for their subjects' well-being while conducting long-term ethnographic field work among the indigenous Yanomamö, in the Amazon Basin between Venezuela and Brazil. He also wrote that the researchers had exacerbated a measles epidemic among the Native Americans, and that Jacques Lizot and Kenneth Good committed acts of sexual impropriety with Yanomamö.