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In the Low Silesia region coal, ores, and rock materials have been exploited for several hundred years. Only some few still exist. The old underground and open brown coal mines are discussed. During the modern development of the surface in the regions of these mines the influence of the old not fully closed down excavations on the statics of the new buildings should be taken into consideration. Therefore...
This trend of economy was created as a reaction against the weakness and inefficiencies of the neoclassical economy. Its representatives state that extremely marketable methods of environmental protection are not the optimum solutions if monopolistic situations in the market occur. The basic feature of postkeynesian economy is the statement that political decisions and consciousness of the nead of...
The intensity of making use of the forests as the aim of walking, bicycle, longer and shorter stays does not decrease. This is accompanied by an activity that not always agrees with nature protection, e.g. faulty localizations of tourist — resting bases or an excessive concentration of touristic traffic. To overcome these negative factors theoretical information about the possibilities of tourist...
Evolution of the ecologic idea reaches back to biblical times. The author distinguishes four stages of the history of this idea: description of the beauty of nature, the first anxiety after the creation of the first industrial centres, the origins of perception of the arriving Apocalypse and the planned activity to avoid it. The author presents the characters of two men who influenced the development...
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