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Examines why many of the rural population in the Third World face a perpetual struggle to provide enough food, due partly to the an adverse climate and unsuitable agricultural land. The problem is compounded...
A survey of modern techniques and equipment used by geologists to visualise underground geological formations in order to help locate reserves of oil and gas. Shows seismic and magnetic surveys in operation...
Shows what happens when a river is overloaded with more waste than it can absorb, and the consequences to those who depend on it. Shows in microscopic detail the organisms which preserve the balance of life...
Traces the development of the gear from the first recorded use in a crude form over two thousand years ago to its widespread use in many forms today. A lever is a means of transferring power. The gear wheel...
Shows the widespread suffering due to endemic disease, using as examples the tropical diseases malaria, filariasis and trachoma. The sources of the diseases and the measures used to eliminate them, both...
Demonstration of the separation of hydrocarbon compounds in crude oil. Using models, the working of the fractionating tower in a distillation unit is shown. Shows a few of the varied uses of the finished...
Study of insect adaptation, with reference to the voyage of the ‘Beagle’ in 1831, which took Darwin to Brazil. Produced for the Darwin-Wallace centenary of 1958.
Shows some 30 insects and their beneficial or harmful effects. Emphasises the desert locust and its organised scientific control. The film is valuable for its exceptionally good visual material which shows...
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