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  2. Smog - Wikipedia

    en.wikipedia.org/wiki/Smog

    Smog, or smoke fog, is a type of intense air pollution. The word "smog" was coined in the early 20th century, and is a portmanteau of the words smoke and fog [ 1 ] to refer to smoky fog due to its opacity, and odor. [ 2 ] The word was then intended to refer to what was sometimes known as pea soup fog, a familiar and serious problem in London ...

  3. Ground-level ozone - Wikipedia

    en.wikipedia.org/wiki/Ground-level_ozone

    Ozone is least concentrated in the ground layer (or planetary boundary layer) of the troposphere. Ground-level or tropospheric ozone is created by chemical reactions between NOx gases (oxides of nitrogen produced by combustion) and volatile organic compounds (VOCs). The combination of these chemicals in the presence of sunlight form ozone.

  4. Patterns in nature - Wikipedia

    en.wikipedia.org/wiki/Patterns_in_nature

    Patterns in nature are visible regularities of form found in the natural world. These patterns recur in different contexts and can sometimes be modelled mathematically. Natural patterns include symmetries, trees, spirals, meanders, waves, foams, tessellations, cracks and stripes. [1] Early Greek philosophers studied pattern, with Plato ...

  5. Organic Abstraction - Wikipedia

    en.wikipedia.org/wiki/Organic_abstraction

    Organic Abstraction is an artistic style characterized by "the use of rounded or wavy abstract forms based on what one finds in nature." [1] It takes its cues from rhythmic forms found in nature, both small scale, as in the structures of small-growth leaves and stems, and grand, as in the shapes of the universe that are revealed by astronomy and physics. [2]

  6. Geoglyph - Wikipedia

    en.wikipedia.org/wiki/Geoglyph

    Geoglyph. A geoglyph is a large design or motif – generally longer than 4 metres (13 ft) – produced on the ground by durable elements of the landscape, such as stones, stone fragments, gravel, or earth. A positive geoglyph is formed by the arrangement and alignment of materials on the ground in a manner akin to petroforms, while a negative ...

  7. Air pollution - Wikipedia

    en.wikipedia.org/wiki/Air_pollution

    e. Air pollution is the contamination of air due to the presence of substances called pollutants in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. [ 1 ] It is also the contamination of the indoor or outdoor environment either by chemical, physical, or biological ...

  8. Land art - Wikipedia

    en.wikipedia.org/wiki/Land_art

    Land art, variously known as Earth art, environmental art, and Earthworks, is an art movement that emerged in the 1960s and 1970s, [ 1 ] largely associated with Great Britain and the United States [ 2 ][ 3 ][ 4 ] but that also includes examples from many countries. As a trend, "land art" expanded boundaries of art by the materials used and the ...

  9. Environmental art - Wikipedia

    en.wikipedia.org/wiki/Environmental_art

    Environmental art is a range of artistic practices encompassing both historical approaches to nature in art and more recent ecological and politically motivated types of works. [1][2] Environmental art has evolved away from formal concerns, for example monumental earthworks using earth as a sculptural material, towards a deeper relationship to ...