Darrell A. Posey, who died in 2001, was internationally known for his support of indigenous peoples and their natural habitats, and particularly for his pioneering work with the Kayapó people of Brazil. He was an organiser of the First International Congress of Ethnobiology which resulted in the Declaration of Belem: the first instance of an international scientific organisation recognizing an obligation to compensate native peoples for use of their knowledge and biological resources. In 1993, Posey received the United Nations Global 500 Award for Outstanding Achievement in Service to the Environment. presents seventeen of his articles on the topics of environment, indigenous knowledge and intellectual property rights. Demonstrating his belief in the validity of indigenous knowledge systems, and his insistence that indigenous rights must be recognised and protected, it is an ideal introduction to his thought and work.