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In the past decade, innovations in hydraulic fracturing and horizontal drilling have fueled a boom in the production of natural gas (as well as oil) from geological formations - primarily deep shales - in which hydrocarbon production was previously unprofitable. Impacts on US fossil fuel...
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Lately, there has been an intensification of the concern for environmental protection and development of an ecological attitude and behaviour among the operators in tourism industry. Consequently, ecological purchases have become important components in establishing hotel environmental...
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