To mark its 40th anniversary, UNEP sponsored this history of the Nairobi-based organization. Written by award-winning conservationist Stanley P Johnson, the book charts the evolution of UNEP from its inception at the landmark Stockholm conference of 1972 to its position today at the heart of the global environment movement. The book is not an official history but explains in depth UNEPs role in protecting the environment with its sponsoring and negotiating of a host of international agreements and other actions.