Patrick Moore, an early Greenpeace member, left the organization in 1986 when it, according to Moore, decided to support a universal ban on chlorine in drinking water. Moore has argued that Greenpeace today is motivated by politics rather than science and that none of his "fellow directors had any formal science education". Bruce Cox, Director of Greenpeace Canada, responded that Greenpeace has never demanded a universal chlorine ban and that Greenpeace does not oppose use of chlorine in drinking water or in pharmaceutical uses, adding that "Mr. Moore is alone in his recollection of a fight over chlorine and/or use of science as his reason for leaving Greenpeace." Paul Watson, an early member of Greenpeace has said that Moore "uses his status as a so-called co-founder of Greenpeace to give credibility to his accusations. I am also a co-founder of Greenpeace and I have known Patrick Moore for 35 years.[...] Moore makes accusations that have no basis in fact". More recently, Moore has been particularly critical of Greenpeace's stance on golden rice, an issue where Moore has been joined by other environmentalists such as Mark Lynas, claiming that Greenpeace has "waged a campaign of misinformation, trashed the scientists who are working to bring Golden Rice to the people who need it, and supported the violent destruction of Golden Rice field trials."