Art is a diverse range of human activities in creating visual, auditory or performing artifacts (artworks), expressing the author's imaginative or technical skill, intended to be appreciated for their beauty or emotional power. In their most general form these activities include the production of works of art, the criticism of art, the study of the history of art, and the aesthetic dissemination of art.
Much greater efficiencies of coal-fired power plants can be achieved by raising steam turbine temperatures and employing innovative combustion processes. Scientists are developing anti-corrosion coatings to facilitate implementation and fewer emissions.
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