World Environmental Problems
Martin H. Edwards: What are today's environmental problems, locally and around the world?
The Aswan High Dam
D.B. McLay: A reply to the 'conventional wisdom' that the High Dam has been an ecological and economic disaster for Egypt.
Canadian Agriculture and World Food Supplies
R.P. Sims: The state of agriculture in Canada; the capacity and constraints in meeting future food demand. The potential for assisting in meeting their increasing demand.