Four half-hour episodes on permaculture, a concept pioneered by the program’s host, Bill Mollison. Permaculture (permanent agriculture) is the opposite of monoculture and is a way of caring for the earth so that it provides household needs, is economically viable and ecologically sound. Contents: 1. “In the Tropics” - the principles of permaculture and examples in Zimbabwe and India. 2. “Arid Lands” - examples in Botswana, Arizona and Australia to roll back the desert. 3. “Cool Climates” - covers Tasmania and England. 4. “Urban” - examples of sustainable agriculture in polluted urban environments.