SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Atmospheric pollution. Clouds of water vapour rising above factory smokestacks and cooling towers. The smokstacks are tall and thin, carrying smoke and atmospheric pollution high above the city. The cooling towers are broader, allowing steam to expand and carry excess heat away from factories and power stations. Photographed in January 2006, in Moscow, Russia.
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