A review of the ominous possibilities in Vermont's future; the ecological disaster developing nationally and this state's chances to avoid it. The three part program opens with a discussion of community planning with Governor Deane C. Davis, Theodore Riehle of the Vermont Central Planning Committee, and the distinguished ecologist and regional planner Ian McHarg. This discussion is followed by the film "Multiply...and Subdue the Earth," a report "On how Americans are turning their once glorious natural environments into poisonous wastelands." Produced by PBS. McHarg, who also appears in the film," says that the U.S. will need all its existing prime agricultural land by the year 2000, when the total population is expected to pass 300 million. Thus the spreading "slurbs" -- poorly planned and hastily built suburbs -- "devastate vital resources and imperil the future water supply." Following the film McHarg, Governor Davis and Riehle will resume their discussion of regional planning and controlled development as it applies to Vermont, a thinly-populated state which lies in the center of a massive concentration of population and industrial growth.