The growth of environmental problems worldwide has been associated with the emergence of a new type of actor-the environmental non-governmental organisation (ENGO)—in political-ecological conflicts. Although few parts of the world have been untouched by this process, it is arguably in the Third World that the political impact of ENGOs has been the greatest. Accordingly, the influence of this type of actor on the changing topography of the Third World’s politicised environment is coming under increasing scrutiny by policy-makers and scholars alike.