Part 1 World's climate and ecosystems - global transport of chemicals: climates of the world seen from an ecotoxicological perspective, G.A. McKay and M.K.Thomas; ecosystems of the world, E.F.Bruenig; atmospheric transport of chemicals, D.R.Miller and C.A.Robinson; aquatic transport of chemicals, E.D.Goldberg. Part 2 Environmental fate of chemicals and chemical exposure in tropical, arid and cold regions: mobility of environmental chemicals including abiotic degradation, W.Klein; biotic degradation of pollutants, F.Matsumura; chemicals in cold environments, D.R.Miller; chemicals in tropical and arid regions, C.R.Krishna Murti. Part 3 Effects of environmental chemicals on biota and ecosystems in tropical, arid and cold regions: effects of temperature and humidity on ecotoxicology of chemicals, P.N.Viswanathan and C.R.Krishna Murti; effects in arid regions, A.S. and R.Y.Perry; effects in marine ecosystems, J.P.Lay and A.Zsolnay; effects in arctic and subarctic systems, D.R.Miller; effects on domestic animals, R.K.Ringer. Part 4 Case studies: environmental pollution in coastal areas of India, R.Sen Gupta et al; biodegradation of pesticides in tropical rice ecosystems, N.Sethunathan; effects of insecticides in rice ecosystems in southeast Asia, E.D.Magallona; fate and effects of aldrin/dieldrin in terrestrial ecosystems in hot climates, I.Scheunert; the use of insecticides in the Onchocerciasis control programme and aquatic monitoring in West Africa, C.Leveque; herbicides in warfare - the case of Indochina, A.Westing; fate and undesirable effects of pesticides in Egypt, A.H.El-Sebae; mercury in Canadian rivers, D.R.Miller.